Question
$ABC$ is a triangle right-angled at $C$. If $AB = 25 cm$ and $AC = 7 cm$, find $BC$
✓
Answer
$A C^2+B C^2=A B^2 \ldots .[\text {By Pythagoras Property}]$
$7^2+B C^2=25^2$
$49+B C^2=625$
$B C^2=625-49$
$B C^2=576$
$B C=24 \mathrm{~cm}$.
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