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OpenStudy (anonymous):
ABCDEFGHIJ is a regular decagon with a radius of 25.89 units and a side length of 16. Find the area of ABCDEFGHIJ. Round the answer to the nearest tenth.
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OpenStudy (anonymous):
If radius means the line joining centre and a vertex., |dw:1373551245879:dw| For a hexagon, I drew a diagram. Try applying it to a decagon. You know the angle and radius.
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