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In the regular decagon (10-sided polygon) below, find the percentage of the shaded area.

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In the regular decagon (10-sided polygon) below, find the percentage of the shaded area.

enter image description here

posted Dec 7, 2017 by anonymous

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Find the area of the shaded region in the following image (We have an isosceles triangle with lengths 10, 10, 12)?

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