The formula for the area of a circle is πr^2. Plug in the given radius for r. You now have π*2.2^2. Square the 2.2 first. 2.2^2 is 4.84. Now take that answer of 4.84 and multiply it by π or 3.14 as indicated in the directions for the problem. 4.84 * 3.14 = 15.1976 Now round that answer to the nearest tenth as the directions said to.
![x^{ \frac{m}{n} }= \sqrt[n]{x^m}](https://tex.z-dn.net/?f=x%5E%7B%20%5Cfrac%7Bm%7D%7Bn%7D%20%7D%3D%20%5Csqrt%5Bn%5D%7Bx%5Em%7D%20)
![x^{ \frac{1}{2} }= \sqrt[2]{x^1}](https://tex.z-dn.net/?f=x%5E%7B%20%5Cfrac%7B1%7D%7B2%7D%20%7D%3D%20%5Csqrt%5B2%5D%7Bx%5E1%7D%20)
or √x