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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 (amistre64):
how many sides does a decagon have?
OpenStudy (anonymous):
10
OpenStudy (amistre64):
then we will need to multiply one of its triangle pieces by 10
OpenStudy (anonymous):
16*10=160 but thats the perimeter
OpenStudy (amistre64):
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