Question

The surface area of a sphere is found using the formula SA=4pi r^2 where r is the radius. If the surface area of a sphere is 576pi square feet, what is the radius, in feet?

Answer 1

divide 576 by pi, then divide that by 4, then find the square root of the remaining number, That's the radius(:

Answer 2

so set 576 pi = 4 pi (r^2), and solve the equation for r.

Answer 3

woops, didnt see pi next to 576 lol, dont divide it by pi

Answer 4

Just divide it by 4, then find the square root of 144(:

Answer 5

thanks :)