The formula for the volume of a come is V=1/3πr^2h. The radius, r, of the cone may be expressed as

Volume = (1/3) (π) (r²) (h)

Multiply each side by 3: 3V = (π) (r²) (h)

Divide each side by π : 3V/π = (r²) (h)

Divide each side by h : 3V / πh = r²

Take the square root

of each side: r = √ (3V/πh).