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
The total surface area of a rectangular block is 1097 \({\text{c}}{{\text{m}}^{\text{2}}}\). What is the area of four sides of the block, if length is 19 cm and the width is 16 cm?
  • A
    793 \({\text{c}}{{\text{m}}^{\text{2}}}\)
  • B
    489 \({\text{c}}{{\text{m}}^{\text{2}}}\)
    Correct
  • C
    539 \({\text{c}}{{\text{m}}^{\text{2}}}\)
  • D
    439 \({\text{c}}{{\text{m}}^{\text{2}}}\)
2
A rectangular cement patio is 10 meters long and 8 meters wide. What is its area?
  • A
    16 \({{\text{m}}^{\text{2}}}\)
  • B
    32 \({{\text{m}}^{\text{2}}}\)
  • C
    40 \({{\text{m}}^{\text{2}}}\)
  • D
    80 \({{\text{m}}^{\text{2}}}\)
    Correct
3
The total surface area of a cube is 1014 \({\text{f}}{{\text{t}}^{\text{2}}}\). What is the length of its edge?
  • A
    13 ft
    Correct
  • B
    11 ft
  • C
    9 ft
  • D
    15 ft
4
A rectangular ink pad is 12 centimeters wide and 5 centimeters tall. What is its perimeter?
  • A
    5 cm
  • B
    12 cm
  • C
    17 cm
  • D
    34 cm
    Correct
5
What is the surface area of the four walls of the water tank, if its length is 8 ft, width 5 ft and height 5 ft?
  • A
    130 \({\text{f}}{{\text{t}}^{\text{2}}}\)
    Correct
  • B
    132 \({\text{f}}{{\text{t}}^{\text{2}}}\)
  • C
    128 \({\text{f}}{{\text{t}}^{\text{2}}}\)
  • D
    126 \({\text{f}}{{\text{t}}^{\text{2}}}\)
6
What is the volume of this cylinder? Use \(\pi {\text{ }} \approx {\text{ 3}}.{\text{14}}\).
Question 6 figure 1
  • A
    None of these
  • B
    9.42 \({\text{c}}{{\text{m}}^{\text{3}}}\)
    Correct
  • C
    3 \({\text{c}}{{\text{m}}^{\text{3}}}\)
  • D
    12 \({\text{c}}{{\text{m}}^{\text{3}}}\)
7
The outer dimensions of a water tank are 7 meters, 6 meters and 5 meters. A quart of paint covers about 15 \({{\text{m}}^{\text{2}}}\). How many quarts do you need to paint the outer walls of the tank?
  • A
    9.6 quarts
    Correct
  • B
    7.6 quarts
  • C
    10.6 quarts
  • D
    8.6 quarts
8
The surface area of the four sides of a cubical dice is 4 \({\text{c}}{{\text{m}}^{\text{2}}}\). What must be the length of its edge?
  • A
    4 cm
  • B
    1 cm
    Correct
  • C
    2 cm
  • D
    3 cm
9
The dimensions of an iron box are \({\text{9 ft }} \times {\text{ 4}}.{\text{4 ft }} \times {\text{ 7}}.{\text{2 ft}}\). What is the cost of the iron sheet used to make the box, if the cost of the sheet is Rs 0.90 per square foot?
  • A
    None of these
  • B
    Rs 344.94
  • C
    Rs 444.94
  • D
    Rs 244.94
    Correct
10
The shape of a garden is rectangular in the middle and semi circular at the ends as shown in the diagram. Find the area of this garden.
  • A
    277.5 \({{\text{m}}^{\text{2}}}\)
  • B
    177.5 \({{\text{m}}^{\text{2}}}\)
    Correct
  • C
    77.5 \({{\text{m}}^{\text{2}}}\)
  • D
    None of these
11
The shape of a garden is rectangular in the middle and semi circular at the ends as shown in the diagram. Find the perimeter of this garden.
  • A
    32 m
  • B
    62 m
    Correct
  • C
    42 m
  • D
    52 m
12
The dimensions of a rectangular iron box are \({\text{l}} \times {\text{w}} \times {\text{h}}\). How many times will the surface area of the iron box increase, if all its dimensions are doubled?
  • A
    8 times
  • B
    None of these
  • C
    3 times
  • D
    4 times
    Correct
13
The length and width of a park are 20 m and 15 m respectively. There is a path of 1 m width inside the park; along the periphery. Find the area of the path.
  • A
    56 \({{\text{m}}^{\text{2}}}\)
  • B
    46 \({{\text{m}}^{\text{2}}}\)
  • C
    66 \({{\text{m}}^{\text{2}}}\)
    Correct
  • D
    36 \({{\text{m}}^{\text{2}}}\)
14
The length and width of a park are 20 m and 15 m respectively. There is a path of 1 m width inside the park; along the periphery. Find the area of the park excluding the path.
  • A
    None of these
  • B
    134 \({{\text{m}}^{\text{2}}}\)
  • C
    234 \({{\text{m}}^{\text{2}}}\)
    Correct
  • D
    34 \({{\text{m}}^{\text{2}}}\)
15
A park has a 2 meter walkway inside along the periphery. Park is 40 meter long and 22 m wide. Find the area of walkway running inside the park.
  • A
    None of these
  • B
    132 \({{\text{m}}^{\text{2}}}\)
  • C
    132 \({{\text{m}}^{\text{2}}}\)
  • D
    232 \({{\text{m}}^{\text{2}}}\)
    Correct