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The diameter of a circular pond is 17.5m. It is surrounded by a path of width 3.5 m. Find the area of the path.

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The diameter of a circular pond is 17.5m. It is surrounded by a path of width 3.5 m. Find the area of the path.

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∴ Area of path = Area of outer circle – Area of inner circle

= πR2 – πr2

= π (R2 – r2)

= π (R – r)(R + r)

= 231 m2

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