Question

A hemispherical bowl is 0.25 cm thick the inner radius of bowl is in 5 cm find the outer surface area, inner surface area and total surface area

Answer 1

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Step-by-step explanation:

Let the outer radius of hemispherical bowl = R = r + 0.25

= 5 + 0.25 = 5.25 cm

Outer curved surface area of bowl = 2πR2 = 2 x 22/7 x (5.25)2

= 2 x 22 x 5.25 x 0.75 = 173.25 cm2