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Circumference = 2 pi R = 2,500 meters

R = 2,500/2 pi

Area = pi R2 = pi (2500)2/4 pi2

1 hectare = (100 meters)2

Area = (25)2/4 pi = 49.736 hectares (rounded)

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Q: The distance around a circular park is 2.50 km How many hectares does it contain?
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