Question

if the radius of a sphere is reduced to its half of what is the new volume would be :-
(a)
$\frac{1}{2} ( \frac{4}{3}\pi \: {r}^{3}$
.............
Answer only question 15
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Answer 1

volume when radius = r

V = 4/3 pi r^3

when radius is r/2..

then V = 4/3 pi r^3/2^3

V = 4/3 pi r^3/8....ans.

Answer 2

Answer:

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