Question

the ratio of the length and breadth of a rectangular field is 5:4. if it's perimeter is 270 m, find the dimensions of the field.
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Answer 1

Answer:

l=75 b=60

Step-by-step explanation:

Let the common factor be 'x'.

therefore, P=2(l+b)

l=5x b=4x

therefore, 270=2(5x+4x)

270=18x

x=270/18

x=15

l=75 b=60

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Answer 2

Answer:

Length = 75 m

breadth = 60 m

Step-by-step explanation:

If the ratio of the length and breadth of a rectangular field is 5:4

Let the proportionality constant be x

So the length is 5x and the

breadth is 4x

The perimeter is 270m

5x + 4x  + 5x + 4x = 270

18x = 270

x = 15

So the length is 5 × 15 = 75

and

the breadth is 4 × 15 = 60