the area of the base = pi * r^2
You did not say if 20 cm was diameter or radius. If diameter then use D/2 = r
multiply area of the base by height to get volume in cm^3
The above circle is the base of a cylinder 20cm with height 13.5 cm.
Work out the volume of the cylinder.
2 answers
V = pi*r^2*h = 3.14*10^2*13.5 = ___ cm^3.