If two sides of the right angled triangle are 3and4
then the length of the third side is
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given two sides of a right angled triangle are 3cm and 4 cm .
by using Pythagoras theorem,
hypotenuse square =side square + side square .
other side=
\begin{gathered} \sqrt{ {3}^{2} + {4}^{2} } \\ = \sqrt{9 + 16 } \\ = \sqrt{25} \\ = 5\end{gathered}
3
2
+4
2
=
9+16
=
25
=5
therefore third side is equal to 5
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