Question

Find the length of the third side. If necessary, round to the nearest tenth. 4 2

Answer 1

The Pythagorean theorem states:

`c^2=a^2+b^2`

where a and b are the legs and c is the hypotenuse of the right triangle.

Substituting with a = 4 and b = 2, and solving for c,

`\begin{gathered} c^2=4^2+2^2 \\ c^2=16^{}+4 \\ c^2=20 \\ c=\sqrt[]{20} \\ c=4.5 \end{gathered}`