Question

hThe surface area of a sphere is found using the formula , where r is the radius. If the surface area of a sphere is 64 square feet, what is the radius, in feet?
A.
–4
B.
16
C.
4
D.
–16

Answer 1

surface area = 4*pi*r^2

Answer 2

so 64 =4 pi r^2
r^2 = 16 pi

Answer 3

your options are incorrect
they should include pi

Answer 4

can you work out the value of r?

Answer 5

sorry this is what they gave me i solved it already thx tho