Question

two adjacent sides of a parallelogram are in the ratio 5:7.if the perimeter of parallelogram is 72cm,find the length of its sides

Answer 1

let the two sides be 5x and 7x respectively
perimeter of parallelogram=2(side 1+side 2)
72=2(5x+7x)
36= 12x. ....(divided by 2)
x=3 ...(divided by 12)
there fore our sides are
5x = 5×3= 15
7x =7×3= 21

Answer 2

answer :

perimeter:2(l+b)

2(l+b)=72

2(7x+5x)=72

=3

by 12 table

5x=5×3=15

7x=7×3=21