Question

The ratio of two sides of a parallelogram is 4:5 . if it’s Perimeter is 54 cm the sides are and —

Answer 1

let the sides be 4x and 5x

perimeter of parellelogram=54

2(l+b)=54
2(4x+5x)=54
18x=54
x=3

hence the sides are
12cm
15cm

Answer 2

let the sides to be x
it is given that the sides are in the ratio 4:5
first side is 4x
second side is 5x
perimeter of parallelogram=perimeter of rectangle
=2(l+b)
54cm=2(4x+5x)
54cm=2(9x)
54cm=18x
54/18=x
3cm =x
first side=4x=3×4cm=12cm

second side=5x=3×5cm=15cm
hope it helps you
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