Question

if a sphere has a radius of 6 and a surface area of 144 pi inches^2. if the radius is doubled what will happen to the surface area?

Answer 1

The surface area of a sphere is given by the formula:\[SA_{sphere}=4\pi r^2\]So what happens if you double r?

Answer 2

just 144*4=576inches^2

Answer 3

No...it won't be doubled...it will be quadrupled

Answer 4

If you double any squared value you quadruple the value.

Answer 5

Shane is right... (2r)^2=4r^2

The surface area would be multiplied by 4.