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A hemispherical bowl has total surface area 99 cm2. What will be the curved surface area (in sq. cm) of five such bowls?

A hemispherical bowl has total surface area 99 cm2. What will be the curved surface area (in sq. cm) of five such bowls? Correct Answer 330

Given, Total surface area = 99 cm2 Let the radius = r cm Total surface area = 3 πr2 ➩ 99 = 3 πr2 ➩ 33 = (22 / 7) * r2 ➩ 33 * 7 / 22 = r2 ➩ r = 3.24 cm Curved surface area of 5 such bowls = 5 * 2 πr2 = 10 * (22 / 7) * (3.24)2 = 330 cm2

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