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16 November, 07:36

A 45 degree sector in a circle has an area of 43.2 centimeters squared.

What is the area of the circle?

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  1. 16 November, 07:49
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    Answer: The area of the circle is 345.6 cm^2.

    If you have a 45 degree sector, that is 1/8 of the total area of the circle.

    45/360 = 1/8

    So simply, multiply the known area by 8 and you will have the total area.

    43.2 x 8 = 345.6 cm^2 is the area of the entire circle.
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