Question

Q.16 If we make double of
radius of a sphere then how
many times its surface area
will become.​

Answer 1

Answer:

Let the radius be x

therefore surface area=4pie r^2

=4*(22/7)*x^2

=88x^2/7

According to the given condition

New radius=2x

New surface area=4pie r^2

=4*(22/7)*(2x^2)

=(88/7)*4x^2

=352x^2/7

=4(88x^2/7)

Therefore if the radius of a sphere is doubled the surface area will increase four times itself.

Hope it helps