Question

In the given figure find length of altitude from A on CD.

Area of $△EBC={480}^2$

AB=30 cm

Answer 1

Since area of $△EBC={480}^2$, area of parallelogram $ABCD=2\times 480=960{cm}^2$
Since, $AB=30cm$ => $CD=30cm$
We know that area of parallelogram $=base\times altitude$
=> $CD\times$ altitude from A to CD $=960{cm}^2$
$=>30\times$ altitude from A to CD $=960{cm}^2$
$=>altitudefromAtoCD$ = 32 cm