Question

Find the third side in simplest radical form: 8 4

Answer 1

the formula is

$\begin{gathered} a^2+b^2=c^2 \\ a^2+4^2=8^2 \\ a^2+16=64 \\ a^2+16-16=64-16 \\ a^2=48 \\ a=\sqrt[\square]{48\text{ }} \\ a=4\sqrt[]{3} \end{gathered}$

answer:

the third side is

$4\sqrt[]{3}$