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.
Your answer should be:
15.2 ft.^2
