Class 8 Mensuration CBSE Questions & Answers

Class 8 · Mensuration

This is Mathematics Class 8 Mensuration CBSE Questions & Answers. There are 15 questions in this test with each question having around four answer choices.

Questions & Answers

A pool is 20 m long, 15 m broad and 4 m deep. Find the cost of cementing its floor and its walls at the rate of Rs. 12 per square metre.

A
None of these
B
Rs 3360
Correct
C
Rs 4360
D
Rs 3460

A tin is in a cylindrical shape whose base has a diameter of 14 cm and height 20 cm. A label is placed around the surface of the container. If the label is placed 2 cm from top and bottom, what is the area of the label?

A
None of these
B
904 \({\text{c}}{{\text{m}}^{\text{2}}}\)
C
704 \({\text{c}}{{\text{m}}^{\text{2}}}\)
Correct
D
804 \({\text{c}}{{\text{m}}^{\text{2}}}\)

Find the perimeter of the dollhouse.

A
14 m
B
10 m
C
12 m
Correct
D
None of these

Find the volume of the cylinder whose base diameter is 14 cm and height is 10 cm.

A
1340 \({\text{c}}{{\text{m}}^{\text{3}}}\)
B
1240 \({\text{c}}{{\text{m}}^{\text{3}}}\)
C
1540 \({\text{c}}{{\text{m}}^{\text{3}}}\)
Correct
D
1440 \({\text{c}}{{\text{m}}^{\text{3}}}\)

The diameter of garden roller is 1.4 m and it is 2 m long. How much area will it cover in 5 revolutions?

A
33 \({{\text{m}}^{\text{2}}}\)
B
44 \({{\text{m}}^{\text{2}}}\)
Correct
C
66 \({{\text{m}}^{\text{2}}}\)
D
55 \({{\text{m}}^{\text{2}}}\)

Find the area of a parallelogram whose measurements are given in the following figure.

A
26 \({\text{c}}{{\text{m}}^{\text{2}}}\)
B
30 \({\text{c}}{{\text{m}}^{\text{2}}}\)
C
24 \({\text{c}}{{\text{m}}^{\text{2}}}\)
Correct
D
28 \({\text{c}}{{\text{m}}^{\text{2}}}\)

Find the side of a cube whose surface area is 2400 \({\text{c}}{{\text{m}}^{\text{2}}}\).

A
60 cm
B
10 cm
C
20 cm
Correct
D
40 cm

The diagonals of a rhombus are 16 cm and 12 cm, find its area.

A
100 \({\text{c}}{{\text{m}}^{\text{2}}}\)
B
90 \({\text{c}}{{\text{m}}^{\text{2}}}\)
C
80 \({\text{c}}{{\text{m}}^{\text{2}}}\)
D
96 \({\text{c}}{{\text{m}}^{\text{2}}}\)
Correct

Volume of a cuboid = __________

A
None of these
B
\(l \times b \times h\)
Correct
C
l + b + h
D
\(l \times b + h\)

1L = _________ \({\text{c}}{{\text{m}}^{\text{3}}}\)

A
10
B
1
C
1000
Correct
D
100

In a building there are 4 cylindrical pillars. The radius of each pillar is 21 cm and height is 5 m. Find the curved surface area of four pillars.

A
30.4 \({{\text{m}}^{\text{2}}}\)
B
28 \({{\text{m}}^{\text{2}}}\)
C
26.4 \({{\text{m}}^{\text{2}}}\)
Correct
D
None of these

The parallel sides of a trapezium are in the ratio 2: 3 and the area of the trapezium is 125 \({\text{c}}{{\text{m}}^{\text{2}}}\). The distance between the parallel lines is 10 cm. Find the length of the parallel sides of the trapezium.

A
10 cm and 20 cm
B
8 cm and 15 cm
C
None of these
D
10 cm and 15 cm
Correct

A rectangular piece of iron sheet is 44 m long and 20 m broad. It is rolled along its length to form a cylinder. Find the volume of the cylinder so formed.

A
2080 \({{\text{m}}^{\text{3}}}\)
B
None of these
C
3080 \({{\text{m}}^{\text{3}}}\)
Correct
D
4080 \({{\text{m}}^{\text{3}}}\)

A rectangle piece of metal sheet \({\text{11 m x 4 m}}\) is folded without overlapping to make a cylinder of height 4 m. Find the volume of the cylinder.

A
48.5 \({{\text{m}}^{\text{3}}}\)
B
38.5 \({{\text{m}}^{\text{3}}}\)
Correct
C
32.5 \({{\text{m}}^{\text{3}}}\)
D
None of these

In the given figure of a cube and a cuboid which one has a greater surface area and by how much?

A
268 \({{\text{m}}^{\text{2}}}\)
B
148 \({{\text{m}}^{\text{2}}}\)
C
None of these
D
168 \({{\text{m}}^{\text{2}}}\)
Correct