Question 1143608
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<pre>

Side BC = {{{sqrt(10^2-8^2)}}} = {{{sqrt(100-64)}}} = {{{sqrt(36)}}} = 6 units.


Pythagorean theorem.
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On Pythagorean theorem, see the lessons 

&nbsp;&nbsp;&nbsp;&nbsp;- <A HREF=http://www.algebra.com/algebra/homework/Pythagorean-theorem/The-Pythagorean-Theorem.lesson>The Pythagorean Theorem</A> 

&nbsp;&nbsp;&nbsp;&nbsp;- <A HREF=http://www.algebra.com/algebra/homework/Pythagorean-theorem/More-proofs-of-the-Pythagorean-Theorem.lesson>More proofs of the Pythagorean Theorem</A>

in this site.