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October 20, 2014

October 20, 2014

Posted by **Marjorie** on Monday, January 24, 2011 at 12:18pm.

- geometry -
**Reiny**, Monday, January 24, 2011 at 2:48pmthe perimeter of the real sail ...

need the other side:

which is √(13^2 - 8^2) = √105

so perimeter of real sail = √105 + 13 + 8 =21 + √105

so the perimeter of the model sail = (21 + √105)/32

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