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1 September, 15:02

A 20° sector in a circle has an area of 21.5π yd². What is the area of the circle?

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  1. 1 September, 15:47
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    A full circle is 360 degrees, so 20 is 1/18 of that. The total area will be 18 times as big, ie., 18 * 21.5π yd² = 387π yd².

    Unclear why the yd² is in here ... did you leave anything out?
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