Aregular decagon is mapped onto itself every time it is rotated

Which expression calculates the speed in meters per second of an object that travels a distance of 100 m every 20 seconds

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.

Through: (-3,-3) parallel to y= 7/3x+3