Posted by **mathfailure** on Tuesday, November 20, 2012 at 11:39am.

The inside wheels of a car traveling on a circular path are rotating half as fast as the outside wheels. The front two wheels are six feet apart. What is the number of feet in the path traced by the inside front wheel in one trip around the circle? Express your answer in the form "k pi", where k is an integer.

- geometry -
**Damon**, Tuesday, November 20, 2012 at 12:00pm
inside wheel at radius r

outside wheel at radius 2 r because circumference is twice

so r = 6

so

2 pi r = 12 r

- geometry -
**Steve**, Tuesday, November 20, 2012 at 12:02pm
2(2pi r) = 2pi (r+6)

2pi r = pi r + 6pi

pi r = 6pi

r = 6

so, the distance is 2pi * 6 = 12 pi

- geometry -
**mathfailure**, Tuesday, November 20, 2012 at 12:02pm
thanks alot man!

## Answer This Question

## Related Questions

- Pre-calc - A car is moving at the rate of 60 miles per hour, and the diameter of...
- Trignometry - A car is moving at a rate of 55 mph and the diameter of its wheels...
- phys - When a car is weighed, it is allowed to move over a scale which records a...
- physics - An automobile traveling 80 mi/hr has wheels 31 inches in diameter. If ...
- dynamics of rigid bodies - 7. A 1800 kg car drives up an inclined of 8% from ...
- Physics - Workers have loaded a delivery truck in such a way that its center of ...
- Physics - A 1000-kg car has four 10-kg wheels. What fraction of the total ...
- AP Physics - A 1050kg car has four 15kg wheels. When the car is moving, what ...
- physics - A 1000 kg car has four 20 kg wheels. When the car is moving, what ...
- Geometry - The front wheel of a child's tricycle has a 10-inch radius and the ...

More Related Questions