Question

find the volume of circular cylinder diameter is 28 and height is 21

Answer 1

12936 is the answer for your question

Answer 2

Diameter = 28 So, Radius=14

Volume of cylinder =
$\pi \: {r}^{2} h$
Substitute the values

=22/7 x 14 x 14 x 21

=12,936 cu. units