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MIT 21F.027J | CMS.874 | 21H.917J Visualizing Cultures, Spring 2008 17 Online
OpenStudy (anonymous):

Find the area of a regular pentagon to thenearest tenth of a square centimeter if the apothem measures about 6.9 cm and each side measures 10 cm.

OpenStudy (shiraz14):

The pentagon may be resolved into 5 triangles with base = side of the pentagon & height = apothem of the pentagon. So we would have: Area of pentagon = (5 X 0.5 X 6.9 X 10) cm^2 = 172.5cm^2.

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