Volume and Surface Area Practice Question and Answer

Q:

The ratio between the length and breadth of a rectangular park is 3: 2. If a man cycling along the boundary of the park at the speed of 12 Km./hr. completes one round in 8 min, then the area of the park in sq.m is – 

1061 0

  • 1
    15360
    Correct
    Wrong
  • 2
    30720
    Correct
    Wrong
  • 3
    153600
    Correct
    Wrong
  • 4
    307200
    Correct
    Wrong
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Answer : 3. "153600"

Q:

The length of a rectangle is 6 cm more than its width and its perimeter is 100 cm. If the area of this rectangle is closest to the area of a circle, then what is the circumference of that circle?

1056 0

  • 1
    110 cm
    Correct
    Wrong
  • 2
    132 cm
    Correct
    Wrong
  • 3
    66 cm
    Correct
    Wrong
  • 4
    88 cm
    Correct
    Wrong
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Answer : 4. "88 cm"

Q:

The lengths of the parallel sides of a trapezium are 51 cm and 21 cm, and that of each of the other two sides is 39 cm. what is the area ( in cm2) of the trapezium?

1055 0

  • 1
    1206
    Correct
    Wrong
  • 2
    1152
    Correct
    Wrong
  • 3
    1260
    Correct
    Wrong
  • 4
    1296
    Correct
    Wrong
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Answer : 4. "1296"

Q:

A rectangular grass plot 80 m × 60 m has two roads, each 10 m wide, running in the middle of it; one parallel to length and the other parallel to breadth. Find the cost of gravelling the roads at ₹ 2 per m2

1053 0

  • 1
    ₹ 2600
    Correct
    Wrong
  • 2
    ₹ 2680
    Correct
    Wrong
  • 3
    ₹ 2580
    Correct
    Wrong
  • 4
    ₹ 2500
    Correct
    Wrong
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Answer : 1. "₹ 2600 "

Q:

Find the area of a quadrilateral whose diagonal is 10 cm. And the length of the length put on it is 6 cm and 5 cm respectively. 

1050 0

  • 1
    55 sq.cm
    Correct
    Wrong
  • 2
    40 sq.cm
    Correct
    Wrong
  • 3
    45 sq.cm
    Correct
    Wrong
  • 4
    90 sq.cm
    Correct
    Wrong
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Answer : 1. "55 sq.cm"

Q:

The ratio of the volume of right circular cylinder and a right circular cone of the same base and height will be:

1048 0

  • 1
    1:3
    Correct
    Wrong
  • 2
    2:3
    Correct
    Wrong
  • 3
    3:2
    Correct
    Wrong
  • 4
    3:1
    Correct
    Wrong
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Answer : 4. "3:1"

Q:

A solid sphere of diameter 17.5 cm is cut into two equal halves. What will be the increase (in cm2) in the total surface area?

1044 0

  • 1
    289
    Correct
    Wrong
  • 2
    616
    Correct
    Wrong
  • 3
    962.56
    Correct
    Wrong
  • 4
    481.056
    Correct
    Wrong
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Answer : 4. "481.056"

Q:

The length, breadth and height of a room is 21 metres, 12 metres and 16 metres. What will be the length of the largest rod that can be placed in that room?

1043 0

  • 1
    32 metres
    Correct
    Wrong
  • 2
    25 metres
    Correct
    Wrong
  • 3
    31 metres
    Correct
    Wrong
  • 4
    29 metres
    Correct
    Wrong
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Answer : 4. "29 metres"

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