Question 165097
Are you sure that you don't want find the "radius" (instead of the "width")? Or do you want to find the diameter?



{{{A=pi*r^2}}} Start with the area of a circle formula



{{{314=3.14*r^2}}} Plug in {{{A=314}}} and replace {{{pi}}} with {{{3.14}}} (this is an approximation)



{{{314/3.14=r^2}}} Divide both sides by 3.14



{{{100=r^2}}} Divide



{{{r^2=100}}} Rearrange the equation.



{{{r=10}}} Take the square root of both sides (only the positive square root is considered).



So the radius of the circle is about 10 yards which means that the diameter is about 20 yards (which is twice the radius)