Question

Q2) The surface area of a sphere is same as the curved surface area of a right circular cylinder whose height and diameter are 12 cm each. The radius of the sphere is *

1 point

8cm

12cm

6 cm

3cm

​

Answer 1

surface area of sphere is same as the curved surface area of cylinder.

Therefore,

4πr

2

=2πRh

2r

2

=6×12

r

2

=36

r=6cm

Answer 2

Step-by-step explanation:

c.s.a.of sphere =$\pi$r²h

=22/7×r×r×12

=r²=22/7×12

=