Answers

2016-03-25T17:41:41+05:30
Tsa of hemisphere-formula-3πr²
csa of hemisphere-----2πr²
tsa of sphere-formula-----4πr²
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2016-03-25T17:42:22+05:30
Total surface area of hollow hemisphere = 3πr²
curved surface area = 2πr²
and surface area of sphere = 4πr²
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