the ratio between the length and breadth of a rectangular field is 1 ratio 3 It's Area is 3/4 hectares. what is the perimeter of the field
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consider
length=x
breadth=3x
here 1 hectare=10000 sq m
so 3/4 hectare=3/4×10000
=3×2500=7500 sq m
A=l×b
x×3x=7500
3x^2=7500
x^2=2500
x=√2500=50 m
l=x=50m
b=3x=3×50=150m
perimeter=2(l+b)
=2(50+150)
=2×200
=400m
length=x
breadth=3x
here 1 hectare=10000 sq m
so 3/4 hectare=3/4×10000
=3×2500=7500 sq m
A=l×b
x×3x=7500
3x^2=7500
x^2=2500
x=√2500=50 m
l=x=50m
b=3x=3×50=150m
perimeter=2(l+b)
=2(50+150)
=2×200
=400m
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