If the diameter of a hemisphere is 42 cm, then the volume of hemisphere (in cm3) is :
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Correct answer: A
Explanation
The correct answer is option 1 i.e. 19404.
the diameter of the hemisphere = 42 cm
the radius r = 42/2 = 21 cm
the volume = 2/3 πr3
⇒ 2/3 × 22/7 × 21 × 21 × 21 = 19404 cm3