SOLUTION: the length nd the bredth of rectangle in the ratio of 7:4.find the perimeter its length is 121cm.

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Question 1047778: the length nd the bredth of rectangle in the ratio of 7:4.find the perimeter its length is 121cm.
Answer by ewatrrr(24785) About Me  (Show Source):
You can put this solution on YOUR website!


Hi  

.

Let x represent the constant of proportionality

P = 2L + 2w

2(7x) + 2(4x) = 121cm

22x = 121

x = 5.5 the constant of proportionality

L = 38.5cm 7%2A5.5%29+ and breadth is 22cm 4%2A5.5%29+ 

AND

Checking the Perimeter

77 + 44 = 121  CHECKS!