Question

who answer this they are genius





find the length and breadth of the rectangle whose perimeter is 120cm and length is twice the breadth



answer as soon as possible
best will be marked as brainlist...


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Answer 1

The length of the rectangle be l=2b
Breadth be b
It's perimeter=2 (l+b)=120cm
=>2 (2b+b)=120cm
=>3b=60cm
=>b=20cm
=>l=2b=40cm
Therefore length is 40cm and breadth is 20cm
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Answer 2

eassssy let breadth be ,x
then according to question length is ,2x
2(l+b)=120
2(2x+x)=120
2(3x)=120
6x=120
x=20
breadth=20cm
length=20×2=40cm