If the radius of a sphere becomes 3 times then its volume will become

Options

A. 3 times
B. 6 times
C. 9 times
D. 27 times

Answer

D

Explanation

Volume of a sphere of radius radius r,`V= 4/3 pi r^3`
Volume of a shpere of radius `3r= 4/3 pi xx (3r)^3=27 xx 4/3 pi r^3 = 27 V`