maths

the diagram shows the plan view of a swimming pool. The pool has a rectangular swimming area and a semi-circle area with steps. Work out the total surface area of the top of the pool. Giver your answer to 3 significant figures.

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  1. no diagram, but

    area of rectangle is length * width
    area of semicircle is 1/2 π * width*2

    subtract one from the other.

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