Question

The volume of a cylinder that is 6 meters in diameter and 60 centimeters high is

Answer 1

The formula of a volume of a cylinder:

$V=\pi r^2h$

We have

$2r=6m\to r=3m\\h=60\ cm=\dfrac{60}{100}\ m=0.6\ m$ $\left(1m=100cm\to1cm=\dfrac{1}{100}m\right)$

substitute

$V=\pi\cdot3^2\cdot0.6=5.4\pi\ m^3$