The equation V = 1/3 π r^2h relates the volume V, the radius r, and the height h of a cone. Write h in terms of V and r.

V = (1/3)(pi)(r²)h  ...   to solve for h, just divide both sides by (1/3)(pi)(r²)....so we have..

V / [ (1/3)(pi)(r²) ]  = h