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If you bought a pizza that is 12 inches in diameter, you get twice as much pizza as you would if you bought a pizza that is 6 inches in diameter. Is this true? Explain your thinking.

Sagot :

Yes

In general, if the dimensions of any two similar shapes are in the ratio m:n , then their areas are in the ratio m2:n2 .

In your case, two similar pizzas (whether circular, rectangular, or what have you) whose dimensions are in the ratio 1:1 have their areas in the ratio 2:1 . Thus, one 12 inch pizza has the same amount of pizza as two 6 inch pizzas.

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