The radius of the hemisphere is 3 cm. The ratio of its volume to the total surface area is

01 : 03 02 : 01 01 : 01 02 : 03

02 : 03

The ratio of volume to the total surface area of the hemisphere: ⇒ \(\frac{2}{3}\)πr3 : 3πr2 ⇒ \(\frac{2}{3}\) × π(27) : 3π(9) ⇒ 18 : 27 ⇒ 2 : 3