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10 January, 08:50

When the radius of a circle is multiplied by a factor of 3, by what factor will the area of the circle change? The area of a circle with radius 3 is x times big as the area of a circle with radius of 1

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  1. 10 January, 10:20
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    Factor of area = (factor of radius) ²

    Factor of area = (3) ²

    Factor of area = 9

    Answer: The area of a circle with radius 3 is 9 times bigger than the area of a circle with radius 1.
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