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Upper primary school mathematics question UPQ114

The ratio of the length of a rectangle to its breadth is 7 : 2. The perimeter of the rectangle is 36 cm. Find its breadth.

Solution:

The perimeter of a rectangle = Length + Length + Breadth + Breadth

Given the ratio of Length : Breadth = 7 : 2

The ratio of Length : Breadth : Perimeter = 7 : 2 : 18

18 units = 36cm

1 unit = 2cm

The Breadth of the triangle = 2 × 2 = 4 cm

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