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December 22, 2014

December 22, 2014

Posted by **Josh** on Saturday, March 15, 2008 at 9:25am.

- Maths -
**drwls**, Saturday, March 15, 2008 at 10:37amSince you know it is equilateral also, the length of a side (c) must be given by c^2 = 12^2 + (c/2)^2

(3/4)c^2 = 12^2

c = 12/[(1/2)sqrt3] = 18.856

You could also write it at 12/sin60

Area = (1/2)(12)(18.856) = ?

Perimeter = 3 c = ?

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