Given

h= 20m
r=29/2 m
Pi= 3.14
Find V
Substitute the formula by
V=1/3*pi*r*r*h

V = (1/3) * 3.14 * (29/2) * (29/2) * 20

V = (1/3) * 3.14 * (841/4) * 20
V = (3.14 * 841 * 20) / 12
V = (52774.8) / 12
V = 4397.9 m^3

Therefore, the volume V is 4397.9 cubic meters.