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Not sure how to set this problem up

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Not sure how to set this problem up

by eclaym2003 » Wed May 27, 2009 10:24 am
A circular jogging path forms the edge of a circular lake that has a diameter of 2 miles. Johanna walked once around the track at the average rate of 3 miles per hour. If t represents the number of hours it took Johanna to walk completely around the lake, which of the following is a correct statement?

The answer was 2<t<2.5.

I divided the distance by the rate to get the time. Since the distance in this case should be 2pi.... time should be 2pi/3. Is this right?
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Re: Not sure how to set this problem up

by dtweah » Wed May 27, 2009 11:46 am
eclaym2003 wrote:A circular jogging path forms the edge of a circular lake that has a diameter of 2 miles. Johanna walked once around the track at the average rate of 3 miles per hour. If t represents the number of hours it took Johanna to walk completely around the lake, which of the following is a correct statement?

The answer was 2<t<2.5.

I divided the distance by the rate to get the time. Since the distance in this case should be 2pi.... time should be 2pi/3. Is this right?
Yep!
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