Question

The adjacent sides of a parallelogram are 20cm and 34cm and one of its side of its diagonal is 42cm. Find the area of parallelogram

Answer 1

adjacent sides of parallelogram=20cm 34cm
diagonal = 42cm ,semi perimeter (s)=96/2=48
therefore area of the triangle through herons formula=>
$\sqrt{48(48 - 42) (48 - 34)(48 - 20)}$
$\sqrt{48 \times 6 \times 14 \times 28}$