Question

The length and breadth of a rectangular field are in the ratio 5: 4. if its perimeter is 180 metre find the dimensions of the field

Answer 1

Answer:

50m and 40 m

Step-by-step explanation:

ratio= 5:4

perimeter= 180 m

perimeter= 2(l+b)

180= 2(5x+4x)

180=2×9x

180=18x

18x=180

x= 180/18

x=10

Length= 5x=5×10=50 m

Breadth= 4x=4×10=40 m

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Answer 2

Answer:

length =50

breadth=40

Step-by-step explanation:

let us consider the number as x

so length is 5x

breadth is 4x

2(l+b)=180

2(5x+4x)=180

2(9x)

18x=180

x=10

therefore,

length =5x=5^10

                   50

breadth=4x=4^10

                    40