Question

$PQRS$ is a parallelogram. $QM$ is the height from $Q$ to $SR$ and $QN$ is the height from $Q$ to $PS$. If $SR=12cm$ and $QM=7.6cm$. Find:
the area of the parallelogram PQRS
$QN$,if $PS=8cm$

Answer 1

Given

$SR=12cm$, $QM=7.6cm$

Area of parallelogram is $SR\times QM=12\times 7.6=91.2c{m}^2$

Area is also given as

$=QN\times PSQN=\frac{91.2}{8}=11.4cm$