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17 October, 21:35

How does the area of a circle compare to the area of another circle whose radius is twice as large? Explain your reasoning.

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  1. 17 October, 21:56
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    Area=pir²

    compared to if we replaced r with 2r

    areaother=pi (2r) ²=pi4r²=4pir²

    it is 4 times the other circle

    doubling the radius makes the area 4 times larger
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