Question

The missing side length in this right triangle is __ cm long.

Answer 1

Given a right angle triangle

The hypotenuse = 29 cm

the length of one leg = 21 cm

Let the missing side = x

We will find x using the Pythagorean theorem as follows:

`29^2=x^2+21^2`

Solve for x:

`\begin{gathered} x^2=29^2-21^2=841-441=400 \\ \\ x=\sqrt[]{400}=20 \end{gathered}`

so, the answer will be:

The missing side = 20 cm