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NCERT Exemplar Class 6 Maths Chapter 6 Mensuration Solutions

NCERT Exemplar Class 6 Maths Solutions Pdf free download was designed by expert teachers from the latest edition of NCERT Exemplar Books to get good marks in board exams.

NCERT Exemplar Class 6 Maths Book PDF Download Chapter 6 Mensuration Solutions

Multiple Choice Questions (MGQs)

Question 1:
Following figures are formed by joining six unit squares. Which figure has the smallest perimeter in figures?
NCERT Exemplar Class 6 Maths Chapter 6 Mensuration Solutions Img 1
(a) (ii)   (b) (iii)   (c) (iv)   (d) (v)
Solution:
NCERT Exemplar Class 6 Maths Chapter 6 Mensuration Solutions Img 2

Question 2:
A square shaped park ABCD of side 100 m has two equal rectangular flower beds each of size 10 m x 5 m (see the figure). Length of the boundary of the remaining park is
NCERT Exemplar Class 6 Maths Chapter 6 Mensuration Solutions Img 3
(a) 360 m (b) 400 m (c) 340 m (d) 460 m
Solution:
(b) In order to find the length of the boundary of the remaining park, we add two flower beds each of length 10 m and breadth 5 m, then remaining park is shown below
NCERT Exemplar Class 6 Maths Chapter 6 Mensuration Solutions Img 4
Now, length of the boundary of the remaining park = Perimeter of remaining park
= (90 + 5 + 10 + 95 + 90 + 5 + 10 + 95) m = 400 m

Question 3:
The side of a square is 10 cm. How many times will the new perimeter become, if the side of the square is doubled?
(a) 2 times (b) 4 times (c) 6 times (d) 8 times
Solution:
(a) Given, side of a square = 10 cm
We know that, perimeter of a square = 4 x Side = 4 x 10
= 40 cm
∴ Perimeter of old square = 40 cm
Now, according to the question, side of the square is doubled.
New side =2 x 10 = 20 cm
Again, perimeter of new square = 4 x Side
= 4 x 20 = 80 cm
∴ New perimeter
= 2 x (Old perimeter)
= 2 x 40 = 80 cm
Hence, the new perimeter is 2 times of the old perimeter.

Question 4:
Length and breadth of a rectangular sheet of a paper are 20 cm and 10 cm, respectively. A rectangular piece is cut from the sheet as shown in the given figure. Which of the following statements is correct for the remaining sheet?
NCERT Exemplar Class 6 Maths Chapter 6 Mensuration Solutions Img 5
(a) Perimeter remains the same but area changes
(b) Area remains the same but perimeter changes
(c) Both area and perimeter are changing
(d) Both area and perimeter remain the same
Solution:
(a) Perimeter of rectangular sheet = 2 x (Length + Breadth)
= 2 x(20+ 10)
= 2 x 30 = 60 cm
∴ A x Breadth
= 200 cm2
NCERT Exemplar Class 6 Maths Chapter 6 Mensuration Solutions Img 6
Now, perimeter of rectangular sheet after cutting the rectangular piece = Sum of all sides = 20+8+5 + 2 + 15+10 = 60 cm
Area = Area of rectangle ABFG + Area of rectangle BCDE = (Length x Breadth) + (Length x Breadth)
= (15 x 10)+(5 x 8)
= 150+ 40 = 190 sq cm
Hence, perimeter remains the same but area changes after cutting the piece.

Question 5:
Two regular hexagons of perimeter 30 cm each are joined as shown in the given figure. The perimeter of the new figure is
NCERT Exemplar Class 6 Maths Chapter 6 Mensuration Solutions Img 7
(a) 65 cm (b) 60 cm
(c) 55 cm (d) 50 cm
Solution:
NCERT Exemplar Class 6 Maths Chapter 6 Mensuration Solutions Img 8

Question 6:
In the given figure, which of the following is a regular polygon? All have equal side except (i).
NCERT Exemplar Class 6 Maths Chapter 6 Mensuration Solutions Img 9
Solution:
(b) In regular polygon, all sides and angles are equal.
According to the question,
In figure (i), all sides are not equal.
So, it is not a regular polygon.
In figure (ii), it is a square and in square all sides are equal and all angles are of 90°.
So, it is a regular polygon.
In figure (iii), it is a parallelogram and in parallelogram opposite sides are equal and opposite angles are equal.
So, it is not a regular polygon.
In figure (iv), all sides are not equal. So, it is not a regular polygon.

Question 7:
Match the shapes (each side measures 2 cm) in Column I with the corresponding perimeters in Column II.
NCERT Exemplar Class 6 Maths Chapter 6 Mensuration Solutions Img 10
Solution:
A. (iv) Perimeter of figure = Sum of all sides
= AB+ BC +CD+DE+ EF + FG + GH+ HI + IJ + JK +KL + LM + MN + NA =2+2+2+2+2+2+2+2+2+2+2+2+2+2 = 28 cm
NCERT Exemplar Class 6 Maths Chapter 6 Mensuration Solutions Img 11
B. (i) Perimeter of figure = Sum of all sides
= AB + BC + CD+DE+EF + FG + GH+HA =2+2+2+2+2+2+2+2 = 16 cm
NCERT Exemplar Class 6 Maths Chapter 6 Mensuration Solutions Img 12
C. (ii) Perimeter of figure = Sum of all sides
= AB+ BC + CD + DE+EF + FG+GH + HI + U + JA = 2 + 2 + 2 + 2+2 + 2 + 2 + 24-2 + 2 = 20 cm
NCERT Exemplar Class 6 Maths Chapter 6 Mensuration Solutions Img 13
D. (iii) Perimeter of figure = Sum of all sides
= AB + BC + CD + DE + EF + FG + GH + HI + IJ + JK + KL + LA =2+2+2+2+2+2+2+2+2+2 =24 cm
NCERT Exemplar Class 6 Maths Chapter 6 Mensuration Solutions Img 14

Question 8:
Match the following:
NCERT Exemplar Class 6 Maths Chapter 6 Mensuration Solutions Img 15
Solution:
NCERT Exemplar Class 6 Maths Chapter 6 Mensuration Solutions Img 16

Fill in the Blanks

In questions 9 to 13, fill in the blanks to make the statements true.

Question 9:
Perimeter of the shaded portion in the given figure is
NCERT Exemplar Class 6 Maths Chapter 6 Mensuration Solutions Img 17
Solution:
Perimeter of the shaded portion = Sum of all sides
= AB+ BM + MD + DE + EN + NG + GH + HA

Question 10:
The amount of region enclosed by a plane closed figure is called its______ .
Solution:
The region enclosed by a plane closed figure is called its area.

Question 11:
Area of a rectangle with length 5 cm and breadth 3 cm is______ .
Solution:
Area = Length x Breadth = 5 x 3 = 15 sq cm

Question 12:
A rectangle and a square have the same perimeter (see the figure)
NCERT Exemplar Class 6 Maths Chapter 6 Mensuration Solutions Img 18
(a) The area of the rectangle is ……….
(b) The area of the square is …………
Solution:
NCERT Exemplar Class 6 Maths Chapter 6 Mensuration Solutions Img 19

Question 13:
(a) 1 m = …….. cm
(b) 1 sq cm = …….. cm x 1 cm
(c) 1 sq m = 1 m x m 100 cm x …….. cm
(d) 1 sq m = ……. sq cm
Solution:
(a) 1 m =100 cm
(b) 1 sq cm = 1 cm x 1 cm
(c) 1 sq m = 1 m x 1 m and 1 sq m = 100 cm x 100 cm
(d) 1 sq m = 100 x 100=10000 sq cm

True/False

In questions 14 to 20, state whether the given statements are True or False.

Question 14:
If length of a rectangle is halved and breadth is doubled, then the area of the rectangle obtained remains same.
Solution:
True
New area = (l/2) x 2 b = l x b = Old area

Question 15:
Area of a square is doubled, if the side of the square is doubled,
Solution:
False
Area becomes four times.

Question 16:
Perimeter of a regular octagon of side 6 cm is 36 cm.
Solution:
False
Perimeter of the regular octagon = 8 x Side of the octagon = 8 x 6 = 48 cm

Question 17:
A farmer who wants to fence his field, must find the perimeter of the field.
Solution:
True
Since, perimeter is the measure of the boundary.

Question 18:
An engineer who plans to build a compound wall on all the sides of a house must find the area of the compound.
Solution:
False
He must find the perimeter of the compound.

Question 19:
To find the cost of painting a wall we need to find the perimeter of the wall.
Solution:
False
To find the cost of painting a wall we need to find the area of the wall.

Question 20:
To find the cost of a frame of a picture, we need to find the perimeter of the picture.
Solution:
True
Length of frame = Perimeter

Question 21:
Four regular hexagons are drawn so as to form the design as shown in the given figure. If the perimeter of the design is 28 cm, find the length of each side of the hexagon.
NCERT Exemplar Class 6 Maths Chapter 6 Mensuration Solutions Img 20
Solution:
Given, four regular hexagons as shown below
NCERT Exemplar Class 6 Maths Chapter 6 Mensuration Solutions Img 21
Perimeter of the given design = Sum of all outer sides of the four hexagon Here, this figure has 14 outer equal sides.
Perimeter of the design = 14 x Length of one side of hexagon => 28 = 14 x Length of one side of hexagon
Length of one side of hexagon = 28/14 = 2 cm
Hence, the length of each side of the hexagon is 2 cm.

Question 22:
Perimeter of an isosceles triangle is 50 cm. If one of the two equal sides is 18 cm, find the third side.
Solution:
Given, perimeter = 50 cm
Perimeter of an isosceles triangle = Sum of its all sides => Perimeter = a + b + c => 50 =18+18 +Third side
=> 50 – 36 = Third side
Third side = 14 cm

Question 23:
Length of a rectangle is three times its breadth. Perimeter of the rectangle is 40 cm. Find its length and width.
Solution:
Let width of rectangle (b) = x cm Then, length of rectangle (l) = 3 x cm.
As we know, Perimeter of rectangle = 2(Z + b)
=> 40 = 2 (3x + x)
=> 8x = 40
=> x = 40/8= 5 cm
Hence, the length is 15 cm and the width is 5 cm.

Question 24:
There is a rectangular lawn 10 m long and 4 m wide in front of Meena’s house (see the figure). It is fenced along the two smaller sides and one longer side leaving a gap of 1 m for the entrance. Find the length of fencing.
NCERT Exemplar Class 6 Maths Chapter 6 Mensuration Solutions Img 22
Solution:
Given, width of the lawn, AB = EF = 4 m and length of the lawn, BE = 10 m
NCERT Exemplar Class 6 Maths Chapter 6 Mensuration Solutions Img 23
Also, given length of gap, CD = 1 m
Total length of fencing = AB + (BC + DE) + EF = AB+ (BE – CD) + EF = 4 m + (10- 1)m + 4 m = (4 + 9 + 4)m = 17 m Hence, the length of fencing of the lawn is 17 m.

Question 25:
The region given in the following figure is measured by taking
NCERT Exemplar Class 6 Maths Chapter 6 Mensuration Solutions Img 24
Solution:
NCERT Exemplar Class 6 Maths Chapter 6 Mensuration Solutions Img 25

Question 26:
Tahir measured the distance around a square field as 200 rods (lathi). Later he found that the length of this rod was 140 cm. Find the side of this field in metre.
Solution:
NCERT Exemplar Class 6 Maths Chapter 6 Mensuration Solutions Img 26

Question 27:
The length of a rectangular field is twice its breadth. Jamal jogged around it four times and covered a distance of 6 km. What is the length of the field?
Solution:
NCERT Exemplar Class 6 Maths Chapter 6 Mensuration Solutions Img 27

Question 28:
Three squares are joined together as shown in the given figure. Their sides are 4 cm, 10 cm and 3 cm. Find the perimeter of the figure.
NCERT Exemplar Class 6 Maths Chapter 6 Mensuration Solutions Img 28
Solution:
Given sides of three squares are 4 cm, 10 cm and 3 cm, respectively.
NCERT Exemplar Class 6 Maths Chapter 6 Mensuration Solutions Img 29
Total perimeter of given squares
= Sum of all outer sides of the figure = 4+4+4+6+10+7 + 3+3 + 3+10= 54 cm

Question 29:
In the given figure, all triangles are equilateral and AB = 8 units. Other triangles have been formed by taking the mid-points of the sides. What is the perimeter of the figure?
NCERT Exemplar Class 6 Maths Chapter 6 Mensuration Solutions Img 30
Solution:
Firstly, find the all outer sides of the given triangles and then find the perimeter by using sum of all sides of the triangles.
Given, AABC is an equilateral triangle.
Here, AB=8 units
∴ AB = BC =CA = 8 units Thus, AADE is an equilateral triangle.
Here, E is the mid-point of AB.
∴ AE = BE =AB/2= 8/2= 4 units 2 2
Now, in AADE,
AD = DE = EA = 4 units
Similarly, equilateral triangles are ABOT and A UPC, having each sides equal, i.e.
BO = OT = BT = UC = PC = PU = 4 units It is also clear that, OC = PA = 4 units Also, ADIF is an equilateral triangle.
NCERT Exemplar Class 6 Maths Chapter 6 Mensuration Solutions Img 31

Question 30:
Length of a rectangular field is 250 m and width is 150 m. Anuradha runs around this field 3 times. How far did she run? How many times she should run around the field to cover a distance of 4 km?
Solution:
NCERT Exemplar Class 6 Maths Chapter 6 Mensuration Solutions Img 32

Question 31:
Bajinder runs ten times around a square track and covers 4 km. Find the length of the track.
Solution:
Given, total length of track covered by Bajinder = 4 km = 4000 m [∴ 1 km = 1000 m]
∴ Length of track covered in 10 rounds = 4000 m
Length of track covered in 1 round = 4000/10 = 400 m
Hence, the length of the track is 400 m.

Question 32:
The lawn in front of Molly’s house is 12 m x 8 m. Whereas the lawn in front of Dolly’s house is 15 m x 5 m. A bamboo fencing is built around both the lawns. How much fencing is required for both?
Solution:
In order to find the total length of fencing around both the gardens, we will calculate the perimeter of both the gardens and then add them.
Given, size of lawn in front of Molly’s house = 12 m x 8 m Perimeter = 2(Length + Breadth)
= 2 (12 + 8)m= 40m …(i)
Now, size of lawn in front of Dolly’s house = 15 m x 5 m Perimeter = 2 (15 + 5) m = 40 m …. (ii)
From Eqs. (i) and (ii), we get total length = 40 + 40 = 80 m Hence, total length of bamboo fencing is 80 m.

Question 33:
The perimeter of a regular pentagon is 1540 cm. How long is its each side?
Solution:
Given that, perimeter of regular pentagon = 1540 cm
∴ Perimeter of regular pentagon = 5 x Length of its side
[∴pentagon has 5 sides of equal length]
=> 5 x Length of side = 1540
1540
Length of side = = 308 cm
5
Hence, the length of each side is 308 cm.

Question 34:
The perimeter of a triangle is 28 cm. One of it’s sides is 8 cm. Write all the sides of the possible isosceles triangles with these measurements.
Solution:
Given, perimeter of triangle = 28 cm and one side = 8 cm
Let other sides be a and b. [∴ in isosceles triangle, two sides are equal]
Then, a = b
According to the question,
Perimeter of triangle = Sum of its all sides
[transposing 8 to LHS] [dividing both sides by 2]
Hence, sides are 8 cm, 10 cm and 10 cm.
Again, let two equal sides be 8 cm and 8 cm
and third side = a
Now, according to the question,
Perimeter of triangle = Sum of its all sides => 28=8+8+a
=> 28 = 16+a
=> 28 -16 = a [transposing 16 to LHS]
=> 12 = a
Hence, sides are 8 cm, 8 cm and 12 cm.

Question 35:
The length of an aluminium strip is 40 cm. If the lengths in cm are measured in natural numbers, write the measurement of all the possible rectangular frames which can be made out of it. (e.g. a rectangular frame with 15 cm length and 5 cm breadth can be made from this strip.)
Solution:
NCERT Exemplar Class 6 Maths Chapter 6 Mensuration Solutions Img 33

Question 36:
Base of a tent is a regular hexagon of perimeter 60 cm. What is the length of each side of the base?
Solution:
NCERT Exemplar Class 6 Maths Chapter 6 Mensuration Solutions Img 34

Question 37:
In an exhibition hall, there are 24 display boards each of length 1 m 50 cm and breadth 1 m. There is a 100 m long aluminium strip, which is used to frame these boards. How many boards will be framed using this strip? Find also the length of the aluminium strip required for the remaining boards.
Solution:
NCERT Exemplar Class 6 Maths Chapter 6 Mensuration Solutions Img 35
NCERT Exemplar Class 6 Maths Chapter 6 Mensuration Solutions Img 36

Question 38:
In the above question, how many square metres of cloth is required to cover all the display boards? What will be the length in metre of the cloth used, if its breadth is 120 cm?
Solution:
NCERT Exemplar Class 6 Maths Chapter 6 Mensuration Solutions Img 37

Question 39:
What is the length of outer boundary of the park shown in the given figure? What will be the total cost of fencing it at the rate of Rs. 20 per metre? There is a rectangular flower bed in the center of the park. Find the cost of manuring the flower bed at the rate of Rs. 50 per square metre.
NCERT Exemplar Class 6 Maths Chapter 6 Mensuration Solutions Img 38
Solution:
Length of outer boundary = Perimeter of park = Sum of all sides length
= (200 + 300 + 80 + 300 + 200 + 260)m = 1340 m Also, rate of fencing per metre = Rs. 20 Then, rate of fencing 1340 metre = 20 x 1340 = Rs. 26800 Now, length of rectangular flower bed = 100 m and breadth of rectangular flower bed = 80 m
∴Area of rectangular flower bed = Length x Breadth
= 100 x 80 = 8000 sq m
Also, rate of manuring the flower bed per square metre = Rs. 50
Then, rate of manuring the flower bed of area 8000 sq m = 50 x 8000= Rs. 400000

Question 40:
Total cost of fencing the park shown in the given figure is Rs. 55000. Find the cost of fencing per metre.
NCERT Exemplar Class 6 Maths Chapter 6 Mensuration Solutions Img 39
Solution:
NCERT Exemplar Class 6 Maths Chapter 6 Mensuration Solutions Img 40

Question 41:
In the given figure, each square is of unit length
(a) What is the perimeter of the rectangle ABCD?
(b) What is the area of the rectangle ABCD?
(c) Divide this rectangle into ten parts of equal area by shading squares, (two parts of equal area are shown here)
(d) Find the perimeter of each part which you have divided. Are they all equal?
NCERT Exemplar Class 6 Maths Chapter 6 Mensuration Solutions Img 41
Solution:
Given, each side of square is of unit length. Figure contains length of 10 squares and width of 6 squares.
Now, length of rectangle, AD = BC
= Sum of length of a side of 10 squares = 1 + 1 + 1 + 1+1 + 1 + 1+1 + 1 + 1 = 10 x 1 = 10 units and breadth of rectangle, AB=DC = Width of 6 squares = 6 x 1 = 6 units
(a) The perimeter of the rectangle ABCD = AB + BC + CD + DA = 6+10+6+10
= 32 units
(b) The area of the rectangle ABCD = Length x Breadth
= AD x AB = 600/10= 60 sq units
(c) The total area of rectangle = 60 sq units.
NCERT Exemplar Class 6 Maths Chapter 6 Mensuration Solutions Img 42
Now, we have to divide the rectangle into 10 equal parts i.e. 6 x 1 = 6 square units, i.e, we have to take a group of 6-6 square blocks, which is shown in the figure.
(d) Now, we find the perimeter of part I. We know that perimeter of a figure is the total length of its boundary.
NCERT Exemplar Class 6 Maths Chapter 6 Mensuration Solutions Img 43
Perimeter of part 1 = 1+1 + 1 + 1 + 1 + 1+1+1 + 1 + 1 + 1 + 1 = 12 units Similarly, we can find the perimeters of remaining 9 parts, all the parts have same perimeter, i.e. 12 units.
Yes, all the parts have same perimeter.

Question 42:
Rectangular wall MNOP of a kitchen is covered with square tiles of 15 cm length (as shown in the given figure). Find the area of the wall.
NCERT Exemplar Class 6 Maths Chapter 6 Mensuration Solutions Img 44
Solution:
In rectangular wall MNOP,
Number of square tiles = 28 Length of one square tile = 15 cm In square, all sides are equal
∴ Area of one square tile = Side x Side = 15 x 15 = 225cm2
Area of 28 tiles = 225 x 28 = 6300 sq cm
Hence, total area of wall MNOP is 6300 sq cm.

Question 43:
Length of a rectangular field is 6 times its breadth. If the length of the field is 120 cm, find the breadth and perimeter of the field.
Solution:
NCERT Exemplar Class 6 Maths Chapter 6 Mensuration Solutions Img 45

Question 44:
Anmol has a chart paper of measure 90 cm x 40 cm, whereas Abhishek has one which measures 50 cm x 70 cm. Which will cover more area on the table and by how much?
Solution:
Given, Anmol’s chart paper size = 90 cm x 40 cm
Here, let 90 cm = length and 40 cm = breadth
∴Area of rectangle = Length x Breadth = 90 x 40 = 3600 sq cm
Similarly, Abhishek’s chart paper size = 50 cm x 70 cm
Here, let 50 cm = length and 70 cm = breadth
∴ Area of rectangle = Length x Breadth = 50 x 70= 3500 sq cm
Hence, Anmol’s chart paper will cover more area as the table.
More area = 3600 – 3500 = 100 sq cm

Question 45:
A rectangular path of 60 m length and 3 m width is covered by square tiles of side 25 cm. How many tiles will there be in one row along its width? How many such rows will be there? Find the number of tiles used to make this path?
Solution:
NCERT Exemplar Class 6 Maths Chapter 6 Mensuration Solutions Img 46

Question 46:
How many square slabs each with side 90 cm are needed to cover a floor of area 81 sq m?
Solution:
NCERT Exemplar Class 6 Maths Chapter 6 Mensuration Solutions Img 47

Question 47:
The length of a rectangular field is 8 m and breadth is 2 m. If a square field has the same perimeter as this rectangular field, find which field has the greater area.
Solution:
NCERT Exemplar Class 6 Maths Chapter 6 Mensuration Solutions Img 48

Question 48:
Parmindar walks around a square park once and covers 800 m. What will be the area of this park?
Solution:
NCERT Exemplar Class 6 Maths Chapter 6 Mensuration Solutions Img 49

Question 49:
The side of a square is 5 cm. How many times does the area increase, if the side of the square is doubled?
Solution:
NCERT Exemplar Class 6 Maths Chapter 6 Mensuration Solutions Img 50

Question 50:
Amita wants to make rectangular cards measuring 8 cm x 5 cm. She has a square chart paper of side 60 cm. How many complete cards can she make from this chart? What area of the chart paper will be left?
Solution:
NCERT Exemplar Class 6 Maths Chapter 6 Mensuration Solutions Img 51

Question 51:
A magazine charges Rs. 300 per 10 sq cm area for advertising. A company decided to order a half page advertisment. If each page of the magazine is 15 cm x 24 cm, what amount will the company has to pay for it?
Solution:
NCERT Exemplar Class 6 Maths Chapter 6 Mensuration Solutions Img 52

Question 52:
The perimeter of a square garden is 48 m. A small flower bed covers 18 sq m area inside this garden. What is the area of the garden that is not covered by the flower bed? What fractional part of the garden is covered by flower bed? Find the ratio of the area covered by the flower bed and the remaining area.
Solution:
NCERT Exemplar Class 6 Maths Chapter 6 Mensuration Solutions Img 53

Question 53:
Perimeter of a square and a rectangle is same. If a side of the square is 15 cm and one side of the rectangle is 18 cm, find the area of the rectangle.
Solution:
NCERT Exemplar Class 6 Maths Chapter 6 Mensuration Solutions Img 54

Question 54:
A wire is cut into several small pieces. Each of the small pieces is bent into a square of side 2 cm. If the total area of the small squares is 28 sq cm, what was the original length of the wire?
Solution:
NCERT Exemplar Class 6 Maths Chapter 6 Mensuration Solutions Img 55

Question 55:
Divide the park shown in figure of question 40 into two rectangles. Find the total area of this park. If one packet of fertilizer is used for 300 sq m, how many packets of fertilizer are required for the whole park?
Solution:
NCERT Exemplar Class 6 Maths Chapter 6 Mensuration Solutions Img 56

Question 56:
The area of a rectangular field is 1600 sq m. If the length of the field is 80 m, find the perimeter of the field.
Solution:
NCERT Exemplar Class 6 Maths Chapter 6 Mensuration Solutions Img 57

Question 57:
The area of each square on a chess board is 4 sq cm. Find the area of the board.
(a) At the beginning of game when all the chess men are put on the board, write area of the squares left unoccupied.
(b) Find the area of the squares occupied by chess men.
Solution:
Given, area of each square on a chess board = 4 sq cm We know that, there are 64 squares on a chess board.
Area of the chess board = Area of 64 squares on a chess board
= 64 x Area of 1 square on a chess board = 64 x 4 sq cm = 256 sq cm
(a) We know that, there are 32 chess men at the beginning of game.
Number of squares occupies by 32 chess men = 32
and number of squares left unoccupied . = Total number of squares – 32
= 64-32 = 32
So, area of squares left unoccupied
= 32 x Area of a square
= 32 x 4 = 128 sq cm
(b) Area of squares occupied by 32 chess men
= 32 x Area of a square
= 32 x 4 =128 sq cm

Question 58:
(a) Find all the possible dimensions (in natural numbers) of a rectangle with a perimeter 36 cm and find their areas.
(b) Find all the possible dimensions (in natural numbers) of a rectangle with an area of 36 sq cm and find their perimeters.
Solution:
NCERT Exemplar Class 6 Maths Chapter 6 Mensuration Solutions Img 58

Question 59:
Find the area and perimeter of each of the following figures, if area of each small square is 1 sq cm.
NCERT Exemplar Class 6 Maths Chapter 6 Mensuration Solutions Img 59
Solution:
NCERT Exemplar Class 6 Maths Chapter 6 Mensuration Solutions Img 60
NCERT Exemplar Class 6 Maths Chapter 6 Mensuration Solutions Img 61
NCERT Exemplar Class 6 Maths Chapter 6 Mensuration Solutions Img 62

Question 60:
What is the area of each small square in the given figure, if the area of entire figure is 96 sq cm? Find the perimeter of the figure.
NCERT Exemplar Class 6 Maths Chapter 6 Mensuration Solutions Img 63
Solution:
NCERT Exemplar Class 6 Maths Chapter 6 Mensuration Solutions Img 64

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