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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)2
= 157 cm2
Total surface area of the hemisphere = 3πr2
= 3 × 3.14 × (5)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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