The volume of the hemisphere is 19,404 cm3. The radius of the hemisphere is _______.
Show answer & explanation
Correct answer: C
Explanation
The correct answer is option 3 i.e. 21 cm
Formula used:
Volume of sphere = (4/3)πr3 ----- (1)
Calculations:
Using equation (1), we get
⇒ 19404 = (4/3) × (22/7) × r3
⇒ r3 = 21 × 21 × 21
⇒ r = 21