3 . A cyclist completes 5 rounds of a circular track of radius 21 metre in 12 minutes calculate his speed? ONE MARK.
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https://www.meritnation.com/ask-answer/question/a-cyclist-takes-five-round-of-a-circular-track-of-diameter-1/motion/8239959
https://www.meritnation.com/ask-answer/question/a-cyclist-takes-five-round-of-a-circular-track-of-diameter-1/motion/8239959