Find the ratio of volumes of a sphere to its hemisphere of same radius.
Show answer & explanation
Correct answer: A
Explanation
Given:
The radius of the sphere and hemisphere is the same.
By the formula:
Volume of the sphere = (4/3)πr³
Volume of the hemisphere = (2/3)πr³
Ratio = (4/3)πr³ : (2/3)πr³ = 4 : 2 = 2 : 1