Answer:

Plug the formula in to your calculator
Well the math comes out to 1102.31 pounds thats a bit unrealistic but i'm fairly sure i converted correctly.
Ok so you would start by getting rid of the fraction. You should know the steps for that by now but here this is what it would look like
3y/4+10=2y/4 Simplify
3y/4+10=1y/210=-1y I really simplified the last part but this is what it looks like:
-
= -1y
10=-1yy=-10
the radius is 8.917197452 in