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

1
Find the area of a rhombus whose diagonals are of lengths 20 cm and 16 cm.
  • A
    140 \({\text{c}}{{\text{m}}^{\text{2}}}\)
  • B
    160 \({\text{c}}{{\text{m}}^{\text{2}}}\)
    Correct
  • C
    150 \({\text{c}}{{\text{m}}^{\text{2}}}\)
  • D
    120 \({\text{c}}{{\text{m}}^{\text{2}}}\)
2
Find the area of the given figure.
Question 2 figure 1
  • A
    12 \({\text{c}}{{\text{m}}^{\text{2}}}\)
  • B
    16 \({\text{c}}{{\text{m}}^{\text{2}}}\)
  • C
    10 \({\text{c}}{{\text{m}}^{\text{2}}}\)
    Correct
  • D
    14 \({\text{c}}{{\text{m}}^{\text{2}}}\)
3
Area of a rhombus = ______
  • A
    None of these
  • B
    double the product of its diagonals
  • C
    half the product of its diagonals
    Correct
  • D
    one-third of the product of its diagonals
4
Surface area of a cuboid = __________
  • A
    None of these
  • B
    2lbh
  • C
    2(lb + bh + hl)
    Correct
  • D
    2 h (l + b)
5
A godown is in the form of a cuboid of measures\({\text{6}}0{\text{m }} \times {\text{ 4}}0{\text{ m}} \times {\text{2}}0{\text{ m}}\) . How many cuboidal boxes can be stored in it if the volume of one box 0.8 \({{\text{m}}^{\text{3}}}\)?
  • A
    50000
  • B
    30000
  • C
    60000
    Correct
  • D
    40000
6
The perimeter of a trapezium is 52 cm. Its non-parallel sides are 10 cm each and the distance between two parallel sides is 8 cm. Find the area of the trapezium.
  • A
    144 cm
  • B
    None of these
  • C
    144 \({\text{c}}{{\text{m}}^{\text{2}}}\)
    Correct
  • D
    144 \({\text{c}}{{\text{m}}^{\text{3}}}\)
7
The cost of papering the wall of a room, 12 m long, at the rate of Rs. 1.35 per square meter is Rs. 340.20. The cost of matting the floor at Re. 0.85 per square metre is Rs. 91.80. Find the height of the room.
  • A
    8 m
  • B
    6 m
    Correct
  • C
    10 m
  • D
    12 m
8
The area of a trapezium is 384 \({\text{c}}{{\text{m}}^{\text{2}}}\). Its parallel sides are in the ratio 3:5 and the distance between them is 12 cm. Find the length of each parallel side.
  • A
    24 cm and 50 cm
  • B
    20 cm and 44 cm
  • C
    24 cm and 40 cm
    Correct
  • D
    None of these
9
In the given figure find the area of the path.
Question 9 figure 1
  • A
    2500 \({\text{c}}{{\text{m}}^{\text{3}}}\)
  • B
    None of these
  • C
    2500 cm
  • D
    2500 \({\text{c}}{{\text{m}}^{\text{2}}}\)
    Correct
10
Find the height of a cuboid whose volume is 275 \({\text{c}}{{\text{m}}^{\text{3}}}\) and base area is 25 \({\text{c}}{{\text{m}}^{\text{2}}}\).
  • A
    9 cm
  • B
    6 cm
  • C
    11 cm
    Correct
  • D
    22 cm
11
Find the side of a cube whose surface area is 2400 \({\text{c}}{{\text{m}}^{\text{2}}}\).
  • A
    25 cm
  • B
    10 cm
  • C
    15 cm
  • D
    20 cm
    Correct
12
Find the volume of 64 cubes whose one side is 4 cm.
  • A
    2096 \({\text{c}}{{\text{m}}^{\text{3}}}\)
  • B
    3096 \({\text{c}}{{\text{m}}^{\text{3}}}\)
  • C
    4096 \({\text{c}}{{\text{m}}^{\text{3}}}\)
    Correct
  • D
    1096 \({\text{c}}{{\text{m}}^{\text{3}}}\)
13
Find the height of cuboid whose volume is 490 \({\text{c}}{{\text{m}}^{\text{3}}}\) and base area is 35 \({\text{c}}{{\text{m}}^{\text{3}}}\).
  • A
    12 cm
  • B
    10 cm
  • C
    14 cm
    Correct
  • D
    16 cm
14
Find the perimeter of the given figure.
Question 14 figure 1
  • A
    12 cm
  • B
    11 cm
  • C
    13 cm
  • D
    9.5 cm
    Correct
15
Surface area of a cube = _________
  • A
    \({\text{6}}{l^{\text{3}}}\)
  • B
    \({\text{5}}{l^{\text{2}}}\)
  • C
    \({\text{6}}{l^{\text{2}}}\)
    Correct
  • D
    \({\text{4}}{l^{\text{2}}}\)