The formula for calculating the volume of a cone is expressed as
Volume = 1/3πr^h
where
r is the radius of the cone
h is the height of the cone
From the information given,
diameter = 6
r = diameter/2 = 6/2 = 3
h = 8
π = 3.14
Thus,
Volume = 1/3 x 3.14 x 3^2 x 8
Volume = 75.36 ft^3