Question

The length of a rectangle is three times its breadth and its area is 300cm.
Find its perimeter.
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Answer 1

Answer:

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Step-by-step explanation:

let,the breadth be x

and the length be 3x

A/Q

3x×x=300

3x²=300

x²=100

x=10

so,

breadth =x=10

length =3x=30

Now,

perimeter =2(l+b)

=2(10+30)

=2×40

=80cm