Question

Tina made a 9-inch apple pie, which she cut into 8 slices. Tina and 2 of her friends each ate a piece of pie. what is the approximate area of the

remaining pie?
A. 18 in ²
B. 24 in ²
C. 40 in ²
D. 159 in ²

Answer 1

First let's find the total area of the pie.

Area = pi x r^2
A = 3.14 x 4.5^2
A = 63.585 in^2

Now let's look at how much was eaten. If Tina cut the pie into 8 slices, and 3 people ate a slice of pie, then 3/8 of the pie was eaten meaning that 5/8 of the pie remains.

5/8 x 63.585 = 39.7in^2

This rounds to 40in^2 which is answer choice C.