What is the area of the concrete border around a swimming pool 25 m by 10 m, if the border is 2.5 m wide at the sides & 5 m at the ends?

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We need to find the area of the concrete borders. The swimming pool is of dimensions 25m by 10m. The concrete border at the sides which are 25 m each is 2.5 m wide and is 5 m wide at the ends of 10 m each.

The area of the border is:

25*2.5*2 + 10*2*5

=> 25*5 + 10*10

=> 125 + 100

=> 225 m^2

The required area of the concrete border is 225 m^2.

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