Question

Find the lenght and breadth a rectangle given that its perimeter is 840 cm and lenght is four time its breadth.

Answer 1

Let the breadth be x and the length be 4x.
perimeter of rec.=840
2(l+b)=840
2(4x+x)=840
2×5x=840
5x=840/2
5x=420
x=420/5=84
therefore, breadth=84cm
and lenght=84×4=336cm.

Answer 2

Hey there your answer


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