Question

The length of a rectangular park is twice it's breadth and it's perimeter is 840m find the area of the park

Answer 1

Let breadth of rectangle be x m.

So, Length = 2x

We know 2(l + b) = P

So, 2(2x + x) = P

or, P = 6x

But, P = 840m

So, x = 840/6 m

or, x = 140 m

So, Breadth of rectangle = 140m

and, Length of rectangle = 280m

Hence area = l x b

= (140 x 280)m^2

or, Area = 39200 m^2

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Answer 2

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The length of a rectangular park is twice it's breadth and it's perimeter is 840m find the area of the park

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Let breadth of rectangle be x m.

So, Length = 2x

We know 2(l + b) = P

So, 2(2x + x) = P

or, P = 6x

But, P = 840m

So, x = 840/6 m

or, x = 140 m

So, Breadth of rectangle = 140m

and, Length of rectangle = 280m

Hence area = l x b

= (140 x 280)m^2

or, Area = 39200 m^2