Question

A pumpkin pie costs $12.55 at Bobby’s Bakery. If the pie has a diameter of 12 inches what is the cost per square inch of the pie?

Answer 1

radius = 6 inches
area = pi * 6^2 = 3.14159 * 36 = about 113 in^2
1255 cents / 113 in^2 = 11.1 cents /in^2

Answer 2

Since the diameter is 12 inches the radius is half that which is 6 inches. Then to find the area of the pumpkin pie we can use the equation A=πr^2 which roughly comes out to 113.1 in^2 (rounded to the hundreds). Then since $12.55 is 1255 cents and we are trying to find the cost per square inch of the pie we can simply divide 1255 by 133.1 which comes out to 11.1 cents per inch squared (rounded to the hundreds)

SO THE ANSWER IS "About 11.1 cents per square inch of the pie"