Question

the longer side of a parallelogram is 8.4 cm and the shorter side is half of the longer side. find the perimeter of the parallelogram

Answer 1

in parallelogram opposite sides are equal
length of big side = 8.4cm
length of short sidd = 8.4/2=4.2
perimeter of parallelogram = 2(l1+l2)
2(8.4+4.2)
2(12.6)
25.2cm

Answer 2

The shorter side is half the longer side I.e. 8.4/2cm=4.2cm
Now, Perimeter =2(sum of adjacent sides)
=2*(4.2+8.4)
=2*12.6
=27.2