A radius of a circle or sphere is any of the line segments from its center to its perimeter, and in more modern usage, it is also their length. Set up the formula for the area of a circle. The formula is A = π r 2 it equals the area of the circle, and r equals the radius.
Solve for the radius.
Plug the area into the formula.
Divide the area by.
Take the square root.
What grade is that?................
Solutions
1hr = 60 min
180 ÷ 60 = 3
<span>180 min = 3 hrs </span>
The answer is 180 degrees
