If the circumference of a circle is 9 inches what is the area in square inches of the circle?

Ok, so if the circumference of a circle is 9 inches, and you want to find the area in in2 you can assume pi is 3.14, so 9 divided by 3.14 is 2.866 rounded to the 3rd decimal, but this is the diameter and radius is half of the diameter, so 2.866 / 2 is 1.433, and the equation for the area of a circle is ∏r2, that simplifies to if 3.14 is assumed for pi ( ∏) then 3.14(1.433)2 is equal to 6.44795546 approximately and rounded to the nearest 3rd decimal point would be 6.448, so 6.448 in2.