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Divide the 62,500 miles/second by the circumference (in miles); that will give you the revolutions per second.Note: If you are given the diameter, you can multiply that by pi to get the circumference; if you are given the radius, multiply that by 2 x pi.

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Q: How many rotations per second would an object the size of VY Canis Majoris make if it was spinning at 62500 miles per second?
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