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

The missing side length in this right triangle is __ cm long.-example-1
User Iateadonut
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1 Answer

26 votes
26 votes

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

User Orysia
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