Question

The length of a rectangle hall is 3 metres more than double of its breadth. If its perimeter is 66 metres, what is the length?​

Answer 1

Answer:

23m

Explanation:

Let the breadth be 'x' m

Then the length will be 2x+3

Perimeter of rectangle = 2(l+b)

66 = 2(2x+3+x)

66/2 = 3x + 3

33 = 3x + 3

33-3 = 3x

30 = 3x

30/3 = x

10 = x

So the breadth is 10m

Then length is = 2x + 3 = 2 × 10 + 3 = 23m

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