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What is the formula for calculating surface area of a hemisphere?
Wiki User
∙ 14y ago
The surface area of a whole sphere, of radius r, is 4*pi*r2.
The area of the curved surface of a hemisphere is, therefore, 2*pi*r2.
The area of the flat surface is that of a circle of radius r, that is = pi*r2.
So the total surface area of a hemisphere is 2*pi*r2 + pi*r2 = 3*pi*r2.
Wiki User
∙ 14y ago
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