Volume of a cylinder = pi r^2 h If the cone has exactly the same measurements then its formula is going to be V_cone = 1/3 pi r^2 h. If that's the case the only difference is that the Cone's volume is 1/3 that of the cylinder V_cone = 1/3 V_cylinder V_cone = 1/3 136 cubic cm. V_cone = 45.33 cubic cm.