Question

the adjacent sides of a parallelogram are in the ratio 5.3; if the longer of the two sides is 7.5 cm find the perimeter of the parallelogram .

Answer 1

Given ratio of adjacent sides
= 5:3
longer side = 7.5 cm

then for other side

as the longer side = 7.5 cm = 5x
then X = 1.5 cm

then other side = 4.5 cm

then perimeter =2( 5x + 3x )
= 2(8x)
= 2 (12)
= 24 cm