3. Find the curved surface area and total surface area
of a hemisphere of radius 10 cm.
(Use t = 3.14
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Answer:
Hemisphere:
When a plane through the centre of a sphere divides the sphere into 2 equal parts then these two equal parts are called hemisphere.
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Given: radius(r) = 10 cm
Total surface area of hemisphere = 3πr²
= (3 × 3.14 × 10 ×10)
= 9.42×100
= 942 cm²
Hence, the total surface area of a hemisphere is 942 cm²
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