Question

1. Determine the missing length in the following right triangle. Round to thenearest tenth.

Answer 1

We can apply Pythagorean theorem to the given right triangle:

`x^2+16^2=20^2`

which gives

`x^2+256=400`

If we move +256 to the right hand side, we get

`\begin{gathered} x^2=400-256 \\ \text{then} \\ x^2=144 \end{gathered}`

Finally, x is given by

`x=\sqrt[]{144}`

then, the answer is x= 12