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CBSE Class 8 Maths Worksheet

Mensuration

1.
Fill in the blanks: The line segment joining the center of circular faces is perpendicular to the base is knowns as __________
2.

A road roller takes 1500 complete revolutions to move once over to level a road. Find the area of the road if the diameter of a road roller is 168 cm and length is 2 m.

A)

15840msq

B)

15845msq

C)

15850msq

D)

15860msq

3.
A cloth material has the shape of a parallelogram whose base is 24 cm and the corresponding height is 10 cm. How many such cloth material are required to cover the full wall with design of area 1080 m sq.? (If required you can split the tiles in whatever way you want to fill up the corners).
4.
Complete the following: Surface area of cube=
A) 6 l sq. B) 6 l cube C) 6 l D) l cube
5.
The area of a quadrilateral shaped ground is 252m sq. The perpendicular dropped on it from the opposite corners on a diagonal are 8 m and 13 m. Find the length of the diagonal.
6.
Guess who I am ? One curved surface and two circular.
7.
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.
8.
A road roller takes 1500 complete revolutions to move once over to level a road. Find the area of the road if the diameter of a road roller is 168 cm and length is 2 m.
9.
If h = 10 cm, c = 6 cm, b = 12 cm,d = 4 cm, find the values of each of its parts separately and add to find the area WXYZ.Verify it by putting the values of h, a and b in the expression h(a+b)/2
10.
Complete the following: Surface area of cylinder=
A) 2py X r(r+h) B) 2(lb+bh+hl) C) 6 l cube D) l X b X h
11.
Find the height of a cylinder whose radius is 14 cm and the total surface area is 1936 cm sq.
12.
The floor of a building consists of 6000 tiles which are rhombus shaped and each of its diagonals are 90 cm and 60 cm in length. Find the total cost of polishing the floor, if the cost per m sq. is Rs 8.
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.
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
15.
Shivani painted the outside of the cabinet of measure 2 m × 4 m × 3 m. How much surface area did she cover if she painted all except the bottom of the cabinet.
16.
The area of a trapezium is 68 cm2 and the length of one of the parallel sides is 10 cm and its height is 8 cm. Find the length of the other parallel side.
17.
Which of the following has its area and perimeter numerically equal ?
A) An equilateral triangle of side 1 cm B) A rectangle of side 1 cm C) A square of side 1cm D) A regular pentagon of side 1cm
18.
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?
19.
Water is pouring into a cuboidal reservoir at the rate of 120 liters per minute. If the volume of reservoir is 216 m cube, find the number of hours it will take to fill the reservoir.
20.
Find the side of a cube whose surface area is 2400 cm sq.

CBSE Class 8 Maths Worksheet

Mensuration

Answers

1.
right circular cylinders.
2.
Option A
3.
45000 cloth material
4.
Option A
5.
24m
6.
Cylinder
7.
140m
8.
15840msq
9.
170cm Sq.
10.
Option B
11.
15 cm
12.
Rs 6480
13.
52.8 m
14.
Option A
15.
44 m sq.
16.
7 cm
17.
Option C
18.
539 ,1078 ,616
19.
60 hours
20.
20 cm