Question

the length of a rectangle is twice the breadth if its perimeter is 60 metre then find its length​

Answer 1

Answer:

Step-by-step explanation:

Let breadth be b, let length be l.

l = 2b

Perimeter = 2 x breadth + 2 x length

Hence 60 = 2b + 2l

Hence 60 = 2b + 4b = 6b

b = 10

Breadth is 10m.

Answer 2

let breadth of the rectangle be X and length be 2x

ATQ

2 (x +2x) = 60

2x + 4x = 60

6x=60

x = 60/6= 10

therefore the length of the rectangle

= 2×10= 20

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