Q21 of 79 Page 245

Curved surface area of solid sphere is 24 cm2. If the sphere is divided into two hemispheres, then the total surface area of one of the hemispheres is

Curved Surface Area = 24 cm2


Let radius be r


Curved Surface Area of solid sphere = 4πr2


4πr2 = 24




Total surface Area of hemisphere = 2πr2 + πr2 = 3πr2


Total surface Area of hemisphere


Total surface Area of hemisphere = 18 cm2


Out of all the four Options,


Correct Option :D

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