find the ratio of total surface area of sphere and a solid hemisphere of same radius
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T.S.A of sphere = 4 pi r^2
T.S.A of Hemisphere = 2 pi r^2
given r is same so ==> 4 pi r^2 / 2 pi r^2 == 4/3
T.S.A of Hemisphere = 2 pi r^2
given r is same so ==> 4 pi r^2 / 2 pi r^2 == 4/3
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let the radius of the sphere = x
therefore, the radius of hemisphere = radius of sphere = x
the total surface area of sphere = 4pier²
the total are of hemisphere = 3pier²
their ratio = 4pier² : 3pier²
= 4:3
therefore, the radius of hemisphere = radius of sphere = x
the total surface area of sphere = 4pier²
the total are of hemisphere = 3pier²
their ratio = 4pier² : 3pier²
= 4:3
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