Cone I Cone II
Base diameter 14 cm 14 cm
Base radius r_{1} = 7 cm r_{2} = 7 cm
Height h_{1} = 10 cm h_{2} = 20 cm
Volume V_{1} = πr_{1}^{2}h_{1} V_{2} = πr_{2}^{2}h_{2}
= π × (7)^{2} × 10 cm^{3} : π × (7)^{2} × 20 cm^{3}
= 490 π cm^{3} : 980π cm^{3}
∴ V_{1}/V_{2} = 490π/980π = ½ ⇒ V_{1} : V_{2} = 1 : 2.