# `the length of a rectangular field is thrice its breath . if the perimeter of this 800 m what is the length of the field and its area

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Length = 3x nd breadth x

perimeter =2(3x+x)=800

4x=400

x=100

so length is 300m and breadth is 100m

area=lb

300*100=30000m²

let the breadth be x.

∴length = 3x

perimeter of a rectangle=2(l+b)

∴800=2(x+3x)

800=8x

∴x=100

∴length=3×breadth=3×100=300.

area of a rectangle=length×breadth

∴area=300×100=30000

hope i helped :)