1.

The volume of a hemisphere is 19404 cm3. Find its diameter (in cm).1). 422). 213). 844). 63

Answer»

Volume of HEMISPHERE = 2/3 × πr3

⇒ 19404 = 2/3 × 22/7 × r3

⇒ r3 = 2261

⇒ r3 = 21 × 21 × 21

⇒ r = 21

Radius of hemisphere (r) = 21 cm

DIAMETER of hemisphere = 21 × 2 = 42 cm


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