Question

Curved surface area of a hemisphere whose radius is 7cm is

Answer 1

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Answer 2

Answer: Curved surface area of a hemisphere is 308 cm².

Step-by-step explanation:

A hemisphere is a 3D shape  obtained by slicing a sphere  along a plane that passes through the center of the sphere. In other words, the hemisphere is half the sphere.

∵Curved surface area of a hemisphere = $2\pi r^{2}$

                                                                 = 2 × (22/7) × (7)²        

                                                                 =  2 × 22 × 7

                                                                 = 308 cm²

∴Curved surface area of a hemisphere is 308 cm².