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[" 3.The outer circumference of a circul...

[" 3.The outer circumference of a circular race-track is "528m" .The track is everywhere "14m],[" wide.Calculate the cost of levelling the track at the rate of "50" paise per square metre "],[" (Use "pi=22/7" )."]

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The outer circumference of a circular race-track is 528 m. The track is everywhere 14 m wide. Calculate the cost of levelling the track at the rate of 50 paise per square metre (U s e\ \ pi=22//7) .

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