Find 1/21th of the volume of a hemisphere whose radius is 4.2 m
Show answer & explanation
Correct answer: B
Explanation
The correct answer is option 2 i.e. 7.3 m3.
Volume of hemisphere = (2/3)πr3
According to the question;
⇒ Volume of hemisphere = (2/3) × (22/7) × (4.2)3
⇒ 155.232
Now,
1/21th of the volume of a hemisphere = (155.232)/21 = 7.3 m3