Mensuration Questions Practice Question and Answer

Q:

The ratio of inradius and circumradius of an equilateral triangle is:

1476 0

  • 1
    1:2
    Correct
    Wrong
  • 2
    2:1
    Correct
    Wrong
  • 3
    $$1: \sqrt { 2} \ $$
    Correct
    Wrong
  • 4
    $$\sqrt { 2} \ :1 $$
    Correct
    Wrong
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Answer : 1. "1:2"

Q: Ratio between the length and breadth of a rectangular field is 9:4. Rs.14400 are spent on the implantation of grass on this field. If the rate of implantation is Rs. 4 per meter square. What is the breath of the field? 2932 0

  • 1
    38 mtr
    Correct
    Wrong
  • 2
    48 mtr
    Correct
    Wrong
  • 3
    42 mtr
    Correct
    Wrong
  • 4
    40 mtr
    Correct
    Wrong
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Answer : 4. "40 mtr"
Explanation :

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Q: Base of a right-angle triangle is 9 cm and its area is 81 sq cm. Find its height. 2960 0

  • 1
    36 cm
    Correct
    Wrong
  • 2
    9 cm
    Correct
    Wrong
  • 3
    27 cm
    Correct
    Wrong
  • 4
    None of these
    Correct
    Wrong
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Answer : 4. "None of these"

Q: If radius and height of a cylinder increase by 20% and15% respectively. then what is the % change in curved surface area? 1479 0

  • 1
    41%
    Correct
    Wrong
  • 2
    38%
    Correct
    Wrong
  • 3
    33%
    Correct
    Wrong
  • 4
    44%
    Correct
    Wrong
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Answer : 2. "38%"
Explanation :

Answer: B) 38% Explanation: % Change in Curved Surface Area is given by  %Change in radius + %Change in height + %Change in radius × %Change in height 100   ⇒+20 + 15 + 20×15100 = 38%

Q: Length and breadth of a rectangular field is 140 m. and respectively. Poles have to be fixed around this field at the distance of 5 m. How many such poles are required? 3646 0

  • 1
    88
    Correct
    Wrong
  • 2
    40
    Correct
    Wrong
  • 3
    92
    Correct
    Wrong
  • 4
    41
    Correct
    Wrong
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Answer : 3. "92"

Q: Ratio of length, breath and height of a room is 5:4:2. Area of four wall is 144 square meter. Find diagonal of the floor. 4075 0

  • 1
    2√41 mtr
    Correct
    Wrong
  • 2
    3√41 mtr
    Correct
    Wrong
  • 3
    2√42 mtr
    Correct
    Wrong
  • 4
    2√41 mtr
    Correct
    Wrong
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Answer : 1. "2√41 mtr "
Explanation :

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Q: The area of a rectangle with 10 cm length is equal to the area of a circle. Find the circumference of the circle. 3056 1

  • 1
    36 cm
    Correct
    Wrong
  • 2
    34 cm
    Correct
    Wrong
  • 3
    26 cm
    Correct
    Wrong
  • 4
    cannot be determined
    Correct
    Wrong
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Answer : 4. "cannot be determined"
Explanation :

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Q:

A hemispherical cup of radius 4 cm is filled to the brim with coffee. The coffee is then poured into a vertical cone of radius 8 cm and height 16 cm. The percentage of the volume of the cone that remains empty is:

1509 0

  • 1
    87.5%
    Correct
    Wrong
  • 2
    80.5%
    Correct
    Wrong
  • 3
    81.6%
    Correct
    Wrong
  • 4
    88.2%
    Correct
    Wrong
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Answer : 1. "87.5%"

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