Q10 of 47 Page 1

If the total surface area of a solid hemisphere is 462 cm2, find its volume. [Take π = 22/7

The surface area of solid hemisphere is given by,

A = 2πr2 + πr2


Given, A = 462 cm2


⇒ 2πr2 + πr2 = 462


⇒ r2 =


⸫ r = √49 = 7 cm


⸫ Volume of hemisphere =


=


= 718.67 cm3


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