Question

The ratio of length and breath of a
rectangle is 3:1, and its perimeter is 36 cm. Find the length and breadth of the rectangle.
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Answer 1

Answer:

Let the length and breadth of the rectangle be 3x cm and x cm, respectively. Thus, the length and breadth of the rectangle is 13.5 cm and 4.5 cm, respectively.

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Step-by-step explanation:

Answer 2

Answer:

Let the length be 3x

Let the breadth be 1x

Perimeter of rectangle = 36 cm

∴ Perimeter of rectangle = 2 ( l + b)

                             36 cm = 2 ( 3x + 1x )

                             36 cm = 2 ( 4x )

                             36 cm = 8x

                             36 / 8 = x

                             4.5 cm = x

∴ Length = 3 x 4.5 = 13.5 cm

∴ Breadth = 4.5 cm