The radius of a hemisphere is 21cm. Find the T.S.A of hemisphere.
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2
Given,
Radius of Hemisphere = 21 cm
=> T.S.A of Hemisphere = 3πr^2
=> T.S.A = 3 x 22/7 x 21 x 21
=> T.S.A = (3 x 22 x 3 x 21) cm^2
=> T.S.A = 4158 cm^2
Hence, The Total Surface Area of Hemisphere = 4158 cm^2
Answered by
4
Given,
Radius of Hemisphere = 21 cm
=> T.S.A of Hemisphere = 3πr^2
=> T.S.A = 3 x 22/7 x 21 x 21
=> T.S.A = (3 x 22 x 3 x 21) cm^2
=> T.S.A = 4158 cm^2
Hence, The Total Surface Area of Hemisphere = 4158 cm^2
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