A rectangular fild is 15 m long and 10 m wide .Another rectangular field having the same perimetre has its sides in retio 4:1 Find the demination of the rectangular field.
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Given , length = 15m, breadth = 10m
perimeter = 2(l+b) = 2(15+10)=2×25=50m
let length of a rectangle = 4x m
breadth of rectangle = 1xm
perimeter of rectangle = 50m
2(l+b)=50
2(4x+1x)=50
5x=50/2=25
x=25/5=5
length = 4x=4×5=20
Breadth =1x=1×5=5
Hence breadth is 5m and length is 20m.
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