Question

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

Answer 1

let breath be x
so length will be 3x
perimeter of a rectangle is 2(l+b)
but here perimeter = 800m
therefore 2(3x+x) = 800m
that equals to 2(4x)=800m
8x=800m
therefore x=800/8
that equal to x=100
now substituting the value
3x=300
x=100
so length=300m
and breath=100m
now area of rectangle = l * b
=> 300*100
=> 30,000msq.

Answer 2

length is 300 m and breadth is 100 m
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