Atrain arrives at a station and waits 2 min before departing. another train arrives at the station 18 minutes later, repeating the cycle. identify the probability that a train will be at the station when you arrive.

Aliaa is skating down a ramp. the wheels on her skateboard have diameters of 60 \text{ mm}60 mm60, space, m, m. what is the distance aliaa travels when her skateboard wheels make 202020 revolutions? round your answer to the nearest \text{mm}mmm, m.