Length of a rectangular is three times its breadth. Perimeter of the rectangle is 40 cm. Find its length and
breadth.
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Answer:
Length of a rectangle =3x
Breadth of a rectangle =x
Perimeter =40 cm
Perimeter =2(l+b)
40 = 2(3x+x)
40 = 6x + 2x
40 = 8x
40÷8= x
5 = x
Length = 3x = 3×5 = 15 cm
breadth = x = 5 cm
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