A circle with a radius of 18 inches has an area of 1,017.88 square inches, so here is what I did to get the final answer. A = πr2 where pi is the ratio of the circumference of a circle to its diameter and r is the radius. π = 3.1416 So then A = π182 = 324π = 1017.88 in2 (2dp)
So the Answer you want would be D. 324in
