Question

The House of Pizza advertises the following prices for small and large cheese pizzas: Small circular pizza with an 11-inch diameter is $8.65 and $.95 per extra topping. Large circular pizza with a 15-inch diameter is $11.75 and $1.50 per extra topping. (a) About how many times more pizza do you get when you order the large size instead of the small size?

Answer 1

1.86 times as much pizza

Explanation:

The ratio of pizza areas is the square of the ratio of pizza diameters, so is ...

(15/11)² = 225/121 ≈ 1.86

You get about 1.86 times as much pizza when you order the large size.