1- Convert to equivalent units.

Question 1How many miles are there in 21.0 km ? 


Question 2: The speed limit on most highways is 120 km/hour. Can you express this in terms of m/sec?


Question 3: In the Figure below, the radius r = 3.4 m and  q = 51.20.  What is the length of the arc, s, facing the angle?  Express your answer  in inches.