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CBSE Class 8 Maths Worksheet

Mensuration

1.

The shape of a field is rectangular in the middle and semi circular at the ends . Find the area and the perimeter of this field [Length of rectangle is 20 – (3.5 + 3.5) meters].

2.

Complete the following: Surface are of cuboid =

A)
2(lb+bh+hl)
B)
l X b X h
C)
2py X r(r+h)
D)
L X b

3.

Avinash wants to buy a trapezium shaped field. Its side along the river is parallel to and twice the side along the road. If the area of this field is 21000 m sq. and the perpendicular distance between the two parallel sides is 200 m, find the length of the side along the river.

4.

If the edge of a cube is 1cm then which of the following is its volume ?

A)
6 m cube
B)
3 m cube
C)
1 m cube
D)
none of these

5.

The internal measures of a cuboidal room are 24 m × 16 m × 8 m. Find the total cost of painting all four walls of a room, if the cost of painting is Rs 5 per m2. What will be the cost of painting if the ceiling of the room is painted.

6.

If the base area and volume of cuboid are 12 cm sq. and 36 cm cube then what is its height ?

7.

The diagonals of a rhombus are 15 cm and 24 cm. Find its area.

8.

Mrs. ponnanna has a square plot with the measurement as 50 cm and inside there is a rectangle shape house measure 40 by 30. She wants to construct a house in the middle of the plot. A garden is developed around the house. Find the total cost of developing a garden around the house at the rate of Rs 110 per m sq.

9.

The edges of cube is 2 cm. Find the total surface are of the cuboid formed by three such cubes joined edge to edge.

10.

Guess who I am ? One curved surface and two circular.

11.

Complete the following: Area of Rhombus=

A)
1/2 X product of diagonals
B)
1/2*sum of parallel sides*height
C)
Base X Height
D)
1/2 base X height

12.

Diameter of cylinder A is 7 cm, and the height is 14 cm. Diameter of cylinder B is 14 cm and height is 7 cm. Without doing any calculations can you suggest whose volume is greater? Verify it by finding the volume of both the cylinders. Check whether the cylinder with greater volume also has greater surface area?

13.

A closed cylindrical tank radius 7 cm and height 5 m is made from a sheet of metal. If the breadth of the rectangular sheet is m. Find the length of the sheet.

14.

Find the area of a rhombus whose side is 12 cm and whose altitude is 8 cm If one of its diagonals is 16 cm long, find the length of the other diagonal.

15.

Fill in the blanks: All Angles of a regular polygon have equal ________ measures

16.

Find the height of a cylinder whose radius is 14 cm and the total surface area is 1936 cm sq.

17.

Length of the boundary of a trapezium shaped garden ABCD is 120 m. If BC = 48 m, CD = 17 m and AD = 40 m, find the area of this garden. Side AB is perpendicular to the parallel sides AD and BC.

18.

If the dimensions of a room are 2m , 3m , and 4m then which of the following is the number of cubes of size 1/2m*1/3*1/4m which can he placed is the room ?

A)
960
B)
672
C)
676
D)
576

19.

Fill in the blanks: All sides of a regular polygon are equal in ________ .

20.

Complete the following: Area of parallelogram = ________

A)
Base X Height
B)
1/2 base X height
C)
1/2 X product of diagonals
D)
l X b X h

CBSE Class 8 Maths Worksheet

Mensuration

Answers

1.

22 m and 48 m

2.

Option A

3.

140m

4.

Option C

5.

Rs 5120

6.

3cm

7.

180cm sq.

8.

Rs 143000

9.

56 cm sq.

10.

Cylinder

11.

Option A

12.

539 ,1078 ,616

13.

52.8 m

14.

12 cm

15.

Degree

16.

15 cm

17.

660m sq.

18.

Option A

19.

Length

20.

Option A