Julia C. answered • 05/18/20

Experienced Teacher for 5th-10th Math

The area of 1 slice would be 1/8 of the total area. Since it is an 18-inch pizza (the diameter), and the radius is half of the diameter, we know that the radius is 9 inches.

Area of a circle = ∏∗r^{2}

r = 9

A = ∏∗9^{2} = 81∏ ≈ 254.47 in^{2}

Now we need to find 1/8 of the area to find the area of 1 slice.

254.47 ÷ 8 ≈ **31.8 in**^{2}

I hope this helps!