Question

Radius of a cricket ball is four times than that of a table tennis ball . The ratio of their volume is ?

Answer 1

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Answer 2

Let the radius of tennis ball be r.

Therefore, radius of cricket ball will be 4r.

$\frac{volume_{cricket \: ball}}{volume_{tennis \: ball}} = \frac{ \cancel{\frac{4}{3}\pi} {(4r)}^{3} }{ \cancel{ \frac{4}{3} \pi} {r}^{3} } \\ \\ \frac{volume_{cricket \: ball}}{volume_{tennis \: ball}} = \frac{64 \cancel{ {r}^{3} }}{\cancel{ {r}^{3} }} \\ \\ \frac{volume_{cricket \: ball}}{volume_{tennis \: ball}} = \frac{64}{1}$

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