Find the volume of a hemisphere of radius 21 cm. (Use π=22/7)
Show answer & explanation
Correct answer: D
Explanation
The correct answer is option 4 i.e. 19404 cm3
Volume of hemisphere = (2/3) × (22/7) × r3
⇒ Volume of hemisphere = (2/3) × (22/7) × 213 ⇒ {2 × 22 × 21 × 21} = 19404 cm3