Question

The length of 2 sides of parallelogram is respectively 40 cm 50 cm One of the diagonal is 20 cm. Find the area of parallelogram

Answer 1

It will be twice the area of triangle created by 40,50,20 triangle.

to find the area use herons formula

S=(a+b+c)/2

Answer : s=(40+50+20)/2 = 55

Ar of triangle = sqrt(55x15x5x35)=25sqrt(231)

Ar of parallelogram = 50sqrt (231)

Answer 2

HOPE IT HELPS YOU!!!!!!!