The radius of the hemisphere is 3 cm. The ratio of its volume to the total surface area is
Answer & explanation
Correct answer: option 4
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