# the adjacent side of a parallelogram are in the ratio 3:7 and its perimeter is 100 cm . find the side of the parallogram .

Adjacent sides of parallelogram are in the ratio 3:7.

Perimeter = 100 cm

Perimeter of a parallelogram is 2(Length+Breadth) = 100
$⇒$2(7x+3x) = 100
$⇒$2(10x) = 100
$⇒$x = 5

Thus, length = 7x = 7$×$5 = 35
breadth = 3x = 7$×$5 = 15