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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  3. 9.6211

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    posted by nook

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