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in Perimeter and Area of Plane Figures by (48.4k points)
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The perimeter of a rectangle is 40 m. Its length is four metres less than five times its breadth. Find the area of the rectangle.

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Best answer

Let breadth of the rectangle = x

Then, length of the rectangle = 5x - 4

We know that,

Perimeter of rectangle = 2(l+b)

So, breadth = x = 4 m and length = 5x - 4 = 5 x 4 - 4 = 16 m

Area of rectangle = l x b = 4 x 16 = 64 m2

Hence, the area of rectangle is 64 m2

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