Question

The length of a rectangle is three times its breadth. If the area of the rectangle is 1875 sq.cm. find its perimeter

Answer 1

let the breadth be x
therefore length will be 3x
therefore
x*3x=1875
3x^2=1875
x^2=1875/3
x^2=625
x=√625
x=25
3x=3×25=75

perimeter=2(l+b)
=2(25+75)
=2×100
=200m

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Answer 2

Let the breadth=x
and length=3x
Area=1875sq.cm
L×B=1875
3x×x=1875
3x^2=1875
x^2=1875/3
×^2=625
x=25
So,the breadth=x=25cm
and length=3x=3×25=75cm
Perimeter=2(l+b)
=2(75+25)=2×100=200cm

I hope it helps you.
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