Question

The circumference of the base of cylinder 3.2m it's height is 20m.find it's volume.

Answer 1

given
2πr = 3.2 m
h= 20 m .

so πr is 1.6
R = 1.6 /π
volume = πr²h
= π* 1.6*1.6*20/π²
= 16*1.6 *2 *7/22
= 25.6*14/22
= 25.6*7/11
= 18/11 =1.7.
THEREFORE volume is 1.7m³.

Answer 2

The circumference of a circle we will find first
r=C/2π
R=3.2/2*3.14
R= 0.51

Volume of cylinder =π(r*r) h
=16.34914285714284