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OpenStudy (anonymous):
A regular octagon has a side length of 10. If a square is formed by connecting the midpoints of every other side of the octagon, what is the area of the square? (leave answer as a radical)
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OpenStudy (anonymous):
Find the apothem of the octagon and plug it into this formula \[A = 2a^{2}\]
OpenStudy (anonymous):
thanks
OpenStudy (anonymous):
|dw:1339364955585:dw| Get it? THis uses the formula: \[A = \frac12d_{1}d_{2}\]
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