Question

In the given picture, $AB//CD,AB=7$ cm, $BD=25$ cm and $CD=17$ cm. Find the length of side $BC$.

Answer 1

Since, $△ABD$ is a right angled triangle , we have
${BD}^2={AB}^2+{AD}^2$
$=>{25}^2=7^2+{AD}^2$
$=>{AD}^2=625-49=576$
$=>AD=24cm$
Since $AB\parallel CD$ and $BC$ is the transversal, we have