how do you go from cicles area to the radius

Question

directrix · Answer

Do you have a problem to solve that could be used to illustrate how to do this?

anonymous · Answer

50.26 is the area what is the radius

anonymous · Answer

since 
$$A=\pi r^2$$ you can solve for r and get 
$$r=\sqrt{\frac{A}{\pi}}$$

anonymous · Answer

Sadly there is no picture

anonymous · Answer

i need a simpler way to understand this like an example and not just the formula

anonymous · Answer

then a specific question would probably work best

anonymous · Answer

if the area is 50.26 what is the radius

directrix · Answer

50.26 is the area 

The area of a circle is pi r^2 where r is the radius and pi is the irrational number beginning  3.14.

 Area of a circle is pi r^2

50.26 = 3.14 * r^2

50.26/3.14 = r^2

16.006 = r ^2

4.00 = r   (answer is approximate due to rounding for pi)

anonymous · Answer

thank  you