Question

the perimeter of parallelogram is 120 m, the distance between a pair of opposite side is 7m and it's area is280 m. find the length of two adjacent side of the parallelogram

Answer 1

Perimeter of parallelogram = 2(l+b)

120 = 2(l+b)

l+b = 120/2

l+b = 60

b = 60 - l

Area of parallelogram = b X h

280 = (60-l) *7

280/7 = 60 - l

-L = 40 - 60

L = 20

So , L = 20

B = 60 - l = 60 - 20

= 40