Question

The length of rectangle is 3 times more than its breadth.If perimeter is 84 m find the length of rectangle​

Answer 1

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Here is ur answer :

Let breath be x.

Length be 3x.

Perimeter = 84 m

Perimeter of Rectangle = 2( l + b)

➡️ 84 = 2 (3x + x)

➡️ 84/2 = 4x

➡️ 42 = 4x

➡️ x = 42/4

➡️ x = 10.5

Width = 10.5m

Let width = 31.5m

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Answer 2

Answer:

Let the breadth be x

So the length be 3x

Perimeter of ractangle = 2(l+b)

or     2(3x+x)      = 84

       6x + 2x      = 84

        8x             = 84

          x             = 84/8

                         = 10.5

Bredth=10.5 m

Length=3*10.5

           = 31.5 m