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The ratio between the length and the breadth of a rectangular park is 3:2. If a man cycling along the boundary of the park at the speed of 12 km/hr completes one round in 8 minutes, then the area of the park (in sq. m) is (a) 15360sq. m  (b) 153600sq. m  (c) 30720sq. m  (d) 307200sq. m

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