A vertical cylindrical tank is filled with water. A solid hemispherical ball of radius 6 cm is completely immersed in it, and the water level rises by 4 cm. What is the radius of the cylinder?
Show answer & explanation
Correct answer: C
Explanation
The correct answer is option 3 i.e. 6 cm.
Volume of cylinder = Volume of hemispherical ball
⇒ =
⇒ r2 × 4 = (2/3) × 63
⇒ r2 = 144/4
⇒ r2 = 36
⇒ r = 6 cm