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Total Questions : 2556 | Page 11 of 256 pages
Question 101.  the surface area of a sphere is same as the curved surface area of a right circular cylinder whose height and diameter are 12 cm each. the radius of the sphere is:
  1.    8 cm
  2.    4 cm
  3.    10 cm
  4.    6 cm
 Discuss Question
Answer: Option D. -> 6 cm
Explanation :
Question 102.  a rectangular park 60 m long and 40 m wide has two concrete crossroads running in the middle of the park and rest of the park has been used as a lawn. if the area of the lawn is 2109 sq. m, then what
  1.    3 m
  2.    4 m
  3.    5.892 m
  4.    3.61 m
 Discuss Question
Answer: Option A. -> 3 m
Explanation :
Question 103.  the area of the biggest circle, which can be drawn inside a square a side of 21 cm (take pi = 22/7) is
  1.    344.5 sq.cm
  2.    345.5 sq.cm
  3.    346.5 sq.cm
  4.    347.5 sq.cm
 Discuss Question
Answer: Option C. -> 346.5 sq.cm
Explanation :
Question 104.  the cost of building a fence around a circular field is rs. 7, 700 at the rate of` 14 per foot. what is the area of the circular field ?
  1.    24062.5 sq.ft
  2.    25062.5 sq.ft
  3.    26062.5 sq.ft
  4.    27062.5 sq.ft
 Discuss Question
Answer: Option A. -> 24062.5 sq.ft
Explanation :
Question 105.  if the length and the breadth of a rectangle is increased by 25% and 44% respectively, by what per cent does the area of that rectangle increase ?
  1.    10 %
  2.    30 %
  3.    50 %
  4.    80 %
 Discuss Question
Answer: Option D. -> 80 %
Explanation :
Question 106.  a rectangular plot measuring 90 metres by 50 metres is to be enclosed by wire fencing. if the poles of the fence are kept 5 metres apart, how many poles will be needed ?
  1.    56
  2.    58
  3.    60
  4.    62
 Discuss Question
Answer: Option A. -> 56
Explanation :
Question 107.  a farmer wishes to start a 100 sq. m rectangular vegetable garden. since he has only 30 m barbed wire, he fences three sides of the garden letting his house compound wall act as the fourth side fencin
  1.    20 m * 5 m
  2.    15 m * 5 m
  3.    10 m * 5 m
  4.    4 m * 5 m
 Discuss Question
Answer: Option A. -> 20 m * 5 m
Explanation :
Question 108.  the cost of carpeting a room 18 m long with a carpet 75 cm wide at rs. 4.50 per metre is rs. 810. the breadth of the room is :
  1.    7.3 m
  2.    7.5 m
  3.    7.7 m
  4.    7.9 m
 Discuss Question
Answer: Option B. -> 7.5 m
Explanation :
Question 109.  a cistern 6 m long and 4 m wide contains water up to a depth of 1 m 25 cm. the total area of the wet surface is:
  1.    47 m²
  2.    48 m²
  3.    49 m²
  4.    50 m²
 Discuss Question
Answer: Option C. -> 49 m²
Explanation :
Question 110.  the total surface areaof a solid hemisphere of diameter 14 cm
  1.    432 cm² 
  2.    442 cm² 
  3.    452 cm² 
  4.    462 cm² 
 Discuss Question
Answer: Option D. -> 462 cm² 
Explanation :

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