Question

One side of a parallelogram is 4.25 m shorter than its adjacent side. If the perimeter of the parallelogram is 71.5 m, find the measure of all side.

Answer 1

let two sides be X and y
then
X = y - 4.25

also
2x+2y = 71.5
putting X in above equation

4y - 8.5 = 71.5

4y = 80

y = 20
therefore X = 15.75