Question

If the surface area of the spherical ball is 4pi then find the length of the line joining centre
and point on its surface?​

Answer 1

A= 4πr²

4n = 4πr²

r²=n/π

$r= (n/π) \frac{1}{2}$

Where A is surface area of sphere and Radius is r. Also the line joining centre and point on surface is Radius. So baaically u need to find r.

Answer 2

Answer: A= 4πr²

4n = 4πr²

r² =n / π

r = ( n / π )½.

Where A is surface area of sphere and Radius is r. Also the line joining centre and point on surface is Radius. So baaically u need to find r.