Question

What is the surface area of a sphere with a radius of 7 feet?

Answer 1

Use thy formula for surface area of a sphere.

4(pi)r^2
4(pi)(7)^2
4(pi)(49)
196(pi)

615.75

Answer 2

SA=4pir^2
r=7
SA=4pi7^2
SA=4pi49
SA=196pi square feet

if we used pi=3.14 then
SA=615.44 square feet