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The volume of hemisphere is 2425 …

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The volume of hemisphere is 2425 1/2cubes. Find its curved surface area

Posted by Sumit Vishwakarma 6 years, 10 months ago

CBSE > Class 10 > Mathematics

1 answers

Yogita Ingle 6 years, 10 months ago

Volume of hemisphere = 2425 1/2 cu cm or 2425.5 cu cm.
Volume of hemisphere = 2/3πr³
2425.5 = 2/3× 22/7× r³
r³ = (2425.5×21)/44
r³ = 50935.5/44
r³ = 1157.625
r = 10.5 cm
Now,
Curved Surface Area of hemisphere = 2πr²
= 2 × 22/7 × 10.5 × 10.5
= 693 sq cm
CSA of hemisphere is 693 sq cm.

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