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OpenStudy (anonymous):
HELP MEDAL + FAN!!!!Calculate the area of the regular pentagon below: A regular pentagon with side length of 22.3 inches and dotted line from center to middle of side of 15.4 inches. 686.84 square inches 732.34 square inches 858.55 square inches 1717.1 square inches
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OpenStudy (tkhunny):
The dotted line and the length of one edge should give you a very strong clue. Does that look like it might relate to a triangle?
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