Question

find the volume of sphere with a radius of 3cm

Answer 1

Volume of sphere =
$4\pi \: r {}^{2}$
=4 × 22/7 × 9
= 88/7×9

=792/7 cm ^3

Answer 2

Volume of sphere = 4/3 πr^3
r = 3
Volume = 4/3 * 22/7 * 3 * 3 * 3
= 113.14 cm^3