Answer:
The radius is 10 because the radius is half of the diameter
It's a ball, so we don't have to worry about friction. Wouldn't it just be 22.6sin(39) = 14.22 pounds of force? Conceptually, at an angle 0 (flat), we would need 22.6sin(0) = 0 pounds of force, and at angle 90 (vertical), we would need 22.6sin(90) = 22.6 pounds (all of it). So it should be 14.22 pounds. And since this is a mathematical question, rather than physics, I'm assuming you don't need to convert to newtons or anything.
222-212! Im pretty sure that’s the answer
18/30 = .6 Percents require that we multiply by 100, so it's 60%
