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Question

If the radius of a solid hemisphere is 5 cm, then find its curved surface area and total surface area. ( π=3.14 )

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Solution


Radius of the hemisphere, r = 5 cm

∴ Curved surface area of the hemisphere = 2πr2 = 2 × 3.14 × (5 cm)2 = 157 cm2

Total surface area of the hemisphere = 3πr2 = 3 × 3.14 × (5 cm)2 = 235.5 cm2

Thus, the curved surface area and total surface area of the solid hemisphere is 157 cm2 and 235.5 cm2, respectively.

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