SOLUTION: Tricky-looking word problem that I don't know what formula to use? All it gives is the radius. "At the equator, the radius of the earth is approximately 3960 miles. Determine in

Question 811287: Tricky-looking word problem that I don't know what formula to use? All it gives is the radius.
"At the equator, the radius of the earth is approximately 3960 miles. Determine in MPH, the speed at which a point on the equator is moving as a result of the earths rotation about its axis. ??
Anyone know how to answer this, or how do you know which formula to use? Thanks!
Answer by josgarithmetic(39630) (Show Source): You can put this solution on YOUR website!
Circumference is miles, so a point on the circumference moves at the circular rate of miles per hour.
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