SOLUTION: Find the area of the triangle with side lengths 4, 5, and 8.

Algebra ->  Triangles -> SOLUTION: Find the area of the triangle with side lengths 4, 5, and 8.       Log On


   

Question 1210260: Find the area of the triangle with side lengths 4, 5, and 8.
Answer by ikleyn(52780) About Me  (Show Source):
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Find the area of the triangle with side lengths 4, 5, and 8.
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Use the Heron's formula.

ANSWER. The area of the triangle is 8.1815 square units, approximately.


I used the online calculator
https://www.omnicalculator.com/math/herons-formula

one of many possible online calculators of this kind.


The referred calculator/web-site has all necessary descriptions and explanations
to the formula, and even a proof of it.