Question

The surface area of a sphere is found using the formula , where r is the radius. if the surface area of a sphere is square feet, what is the radius, in feet?

a. 6
b. 12
c. 18
d. 36

Answer 1

2919 9919 9900 dot dot dot dot dot dot dot dot dot dot dot dot dot dot dot dot dot dot dot and if you have left the third semester did that that that that's 9000

Answer 2

If the radius is 6 square feet, the surface area is 452.39

If the radius is 12, it's 1809.56

If the radius is 18, it's 4071.5

If the radius is 36, it's 16286.02

The are can be found from radius with the following formula

`area = 4 * \pi * {r}^(2)`
To find the radius from area, use the formula rewritten like so

`radius = \sqrt{ (area)/(4 * \pi) }`