Question

The axis of the sphere below is 16 units in length. What is the surface area of the sphere?

Answer 1

SA = 4 pi r^2

r is half diameter

Answer 2

so it would be 256?

Answer 3

@agent0smith

Answer 4

4*pi*8^2 = 256pi

Answer 5

Please help on this one

Answer 6

@agent0smith

Answer 7

@Opcode

Answer 8

if you double the radius, the SA will quadruple, since it's r^2 and (2r)^2