Volume of a hemisphere is 19404 cubic cm. The total surface area is?

Question

Accepted Answer

(2/3) x (22/7) x r3 = 19404 ⇒ r3 = 19404 x (7/22) x (3/2) = 9261 = (21)3 ∴ r = 21 cm Total Surface area = 3πr2 = 3 x (22/7) x 21 x 21 cm2 = 4158 cm2

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