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Total Questions : 2556 | Page 83 of 256 pages
Question 821.  12 spheres of the same size are made from melting a solid cylinder of 16 cm diameter and 2 cm height. find the diameter of each sphere.
  1.    2 cm
  2.    4 cm
  3.    6 cm
  4.    8 cm
 Discuss Question
Answer: Option B. -> 4 cm
Explanation :
Question 822.  the cost of the paint is rs. 36.50 per kg. if 1 kg of paint covers 16 square feet, how much will it cost to paint outside of a cube having 8 feet each side.
  1.    Rs. 838
  2.    Rs. 856
  3.    Rs. 876
  4.    Rs. 895
 Discuss Question
Answer: Option C. -> Rs. 876
Explanation :
Question 823.  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 824.  a rectangular plot is half as long again as it is board and is area is 2/3 hectares , then is length is :
  1.    50 m
  2.    100 m
  3.    150 m
  4.    200 m
 Discuss Question
Answer: Option B. -> 100 m
Explanation :
Question 825.  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 826.  a courtyard 25 m long and 16 m broad is to be paved with bricks of dimensions 20 cm by 10 cm . the total number of bricks required is :
  1.    20,000
  2.    24,000
  3.    18,000
  4.    14,000
 Discuss Question
Answer: Option A. -> 20,000
Explanation :
Question 827.  12 spheres of the same size are made from melting a solid cylinder of 16 cm diameter and 2 cm height. find the diameter of each sphere.
  1.    2 cm
  2.    4 cm
  3.    6 cm
  4.    8 cm
 Discuss Question
Answer: Option B. -> 4 cm
Explanation :
Question 828.  the ratio of the length and the breadth of a rectangle is 4 : 3 . also, its perimeter is 112 cm. what is the area of the rectangle ?
  1.    766 cm²
  2.    767 cm²
  3.    768 cm²
  4.    769 cm²
 Discuss Question
Answer: Option C. -> 768 cm²
Explanation :
Question 829.  the area of a circle is 154 sq cm. what is the circumference of the circle ?
  1.    44 cm
  2.    45 cm
  3.    46 cm
  4.    47 cm
 Discuss Question
Answer: Option A. -> 44 cm
Explanation :
Question 830.  the perimeter of a square is 504 cm. what is the area of the square ?
  1.    12876 cm²
  2.    13876 cm²
  3.    14876 cm²
  4.    15876 cm²
 Discuss Question
Answer: Option D. -> 15876 cm²
Explanation :

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