Asked by Lori

A 7 inch pizza cost $8 and a 14 inch pizza costs $20. Tommy says the smaller pizza is a better buy because the larger pizza is twice as big and more than twice as expensive. Do you agree with his reasoning? Explain why or why not.
Answered by Ms. Sue
Area of 7 inch pizza:

A = pi * r^2
A = 3.14 * 3.5 * 3.5
A = 38.465 square inches

8/38.465 = $0.21 per square inch

Follow the above procedure to find the area and cost per square inch of the larger pizza.

Answered by Lori
A = pi x r^2
A = 3.14 x 7 x7
A = 153.86
20/153.86 = $0.13 per square inch
Answered by Ms. Sue
Right! :-)

Answered by Lori
Thank you!
Answered by Ms. Sue
You're welcome.

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