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Length of a rectangle is three times its breadth. Perimeter of the rectangle is 40cm. Find its length and width.

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Best answer

From the question it is given that,

Perimeter of rectangle = 40 cm

Length of a rectangle is three time its breadth = 3b

We know that, perimeter of rectangle = 2 × (length + breadth)

40 = 2 × (3b + b)

50 = 2 × 4b

40 = 8b

40/8 = b

b = 5 cm

Therefore, width of rectangle = 5 cm

Length of rectangle = 3b

= 3 × 5

= 15 cm

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