What is the radius of a circle with an area of 32.1 square feet?

So we want to know the radius of the circle that has area A=32.1 ft^2. The formula for the area of a circle is A=pi*r^2. So to get the radius we must first divide both sides by pi and then take the square root. So, r^2=A/pi=10.2229 and the square root is= r= sqrt 10.2229 = 3.197 ft

The decimal expansion would be .27 repeated