Question

a hemisphere is cut out from a sphere of radius 7 cm find out the curved surface area of the hemisphere



please answer as soon as possible

Answer 1

Answer: 308 cm^2

Step-by-step explanation:

Area of sphere = 4 x pi x r^2

= 4 x pi x 7^2

= 4 x pi x 49

= 616 cm^3

Hemisphere = half sphere

= 616/2

= 308 cm^2

Answer 2

Answer:

Step-by-step explanation:

Here as we know ,

Radius of sphere = Radius of hemisphere ( as hemisphere is the part of sphere )

So Radius (r) = 7 cm

So now C.S.A of hemisphere

2 pie ( r ) square.

2 × 22/7 × 7 × 7

=> 44 × 7 = 308 cm^2

So C.S.A of hemisphere is

308 cm^2.

Hope it helps.