Question 1137471
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perimeter = 13 + 10 + 14 = 37;

semi-perimeter s = 37/2 = 18.5

s - a = 18.5 - 13 = 5.5;

s - b = 18.5 - 10 = 8.5;

s - c = 18.5 - 14 = 4.5.


Heron's formula:


    Area = {{{sqrt(18.5*5.5*8.5*4.5)}}} = {{{sqrt(3891.9475)}}} = 62.39 square miles.    <U>ANSWER</U>
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