Question

PLEASE HELP WHICH GO TOGETHER ????? WILL REWARD BRAINLIEST

Answer 1

We need to solve for the radius. So using the "formula" for the surface area, we have

900*pi ft^2 = 4*pi*r^2       divide by pi

900 ft^2 = 4*r^2    divide by 4

225ft^2 = r^2         take the square root of each side

15 ft = r

This should give you tools to answer all the questions.