Question

A spherical ball of diameter 21 cm is melted and recast into cubes each of side 1 cm. Find the number of cubes so formed

Answer 1

Solution :-

Diameter of sphere = 21 cm

Radius = 21/2 = 10.5 cm

Volume of sphere = 4/3πr³

⇒ 4/3*22/7*10.5*10.5*10.5

⇒ 101871/21

= 4851 cu cm

Volume of cube = Edge*Edge*Edge

⇒ 1*1*1

= 1 cu cm

Let number of cubes formed be n

Volume of sphere = n(Volume of cube)

⇒ 4851 = n × 1

⇒ n = 4851

So, number of cubes formed is 4851

Answer.

Answer 2

Step-by-step explanation:

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