Question
The breadth of a rectangle is increased by 10 cm, it
will become twice the length of the rectangle. If the new perimeter is 360 cm, then find the original area (in sq.cm) of the rectangle.Solution
Let the length of the rectangle be l cm. Breadth = 2l cm According to the question, => 2(l + 2l) = 360 => 3l = 180 => l = 60 So, breadth = 60 - 10 = 50 cm Original area = 60 × 50 = 3000 cm2
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