The total surface area of a hemisphere is 166.32 sq cm, find its curved surface area? ?->(Show Answer!)

1. The total surface area of a hemisphere is 166.32 sq cm, find its curved surface area?

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By: anil on 05 May 2019 02.10 am

Let radius of hemisphere = $$r$$ cm Total surface area of hemisphere = $$3 pi r^2 = 166.32$$ ------------(i) Multiplying equation (i) by $$frac{2}{3}$$ => $$frac{2}{3} imes 3 pi r^2 = frac{2}{3} imes 166.32$$ => Curved Surface area of hemisphere = $$2 pi r^2 = 2 imes 55.44 = 110.88 cm^2$$ => Ans - (C)

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