NCO- Cyber Olympiad (SOF) Class 10: Questions 1 of 495

Question

MCQ▾

The Volume of a solid metallic sphere is 2512 . It is melted and recast into solid right circular cones of radius 5 cm and height 16 cm. Calculate the number of cones recast.

Choices

Choice (4) Response

a.

9

b.

6

c.

8

d.

7

Answer

b.

Explanation

  • As given, the volume of a solid metallic sphere is 2512 .
  • Then it is melted and recast into solid right circular cones of radius 5 cm and height 16 cm.
  • Now, as we know, the formula of Volume of a right circular cone is: , where, r = radius and h = height.
  • Therefore, volume of a right circular cone is:
  • Hence, the number of cones recast are:
    • cones

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