The radius of the circle is half of the diameter, which is given as 6 inches. Therefore, the radius (r) of the circle is:
r = 6 in / 2 = 3 in
We are given to use 3 for π, so we can substitute these values into the formula for the area of a circle:
A = πr²
A = 3 x 3²
A = 3 x 9
A = 27
Therefore, the area of the circle is 27 square inches.