Pre ALgebra

If a pizza with a diameter of 12 inches costs \$10.99, based on area, about how much should a 15-inch pizza cost? (Hint: Be sure to use the area of the pizza in your proportion, not the diameter.)

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1. A = pi * r^2
A = 3.14 * 36
A = 113.04 square inches

10.99 / 113.04 = 0.097 = about \$0.10 per square inch

Find the area of the larger pizza and multiply it by 0.1

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2. gbhn

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3. 9.6211

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posted by nook

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