Question

What is the total surface area of solid hemisphere of diameter 7 cm

Answer 1

Given that diameter of hemisphere = 7 cm

so, radius = d/2 =7/2

we know that T.S.A of hemisphere is 3πr^2

so, substituting all these values, we get

3×22/7×7/2×7/2

by calculating,we get

231/2=115.5cm^2

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