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September 2, 2014

September 2, 2014

Posted by **Anonymous** on Monday, June 20, 2011 at 1:40pm.

- geometry -
**Henry**, Monday, June 20, 2011 at 8:29pmI am assuming this nis a rt triangle.

a^2 + b^2 = c^2.

a^2 + (12)^2 = (18)^2,

a^2 = (18)^2 - (12)^2 = 180,

a = 13.4 in.

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