Question

If a pizza with a diameter of 12 inches costs $10.99, based on area, about how much should a 15-inch pizza cost?

Answer 1

Answer:

Area of a circle=πr^2

12 inch pizza

π(6^2)≈113.04in^2

15 inch pizza

π(7.5^2)≈176.625in^2

Now we turn this into a fraction, and solve the problem:

113.04/10.99=176.625/x

113.04x=1941.10875 <-------Division property of equality

x=17.171875.

The cost of a 15 inch diameter pizza is $17.17

Hope this helped.