<PRE><B>Question 719271</B>
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Use Herons&#39;s formula.  The area of a triangle with sides *[tex \LARGE a], *[tex \LARGE b], and *[tex \LARGE c] is given by:


*[tex \LARGE A\ =\ \sqrt{s(s\ -\ a)(s\ -\ b)(s\ -\ c)}]


Where *[tex \LARGE s] is the semiperimeter, that is, the perimeter divided by 2.  Calculate the semiperimeter and then just do the arithmetic.  Since the least precise given measurement is to the nearest tenth, round your answer to the nearest tenth.


John
*[tex \LARGE e^{i\pi}\ +\ 1\ =\ 0]
&lt;font face=&quot;Math1&quot; size=&quot;+2&quot;&gt;Egw to Beta kai to Sigma&lt;/font&gt;
My calculator said it, I believe it, that settles it
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