The volume of a hemisphere is 486π cm3. Find the radius.
Show answer & explanation
Correct answer: C
Explanation
The correct answer is option 3 i.e. 9 cm.
The volume of a hemisphere = 486π
The volume of a hemisphere = (2/3)πr3
⇒ 486π = (2/3)πr3
⇒ 729 = r3
r = 9 cm