Two cities are 9 centimeters apart on the map. How many miles apart are two cities

When y’all answer can y’all explain too !

Which of the following is an example of a rational number? a. π b. √ 9 c. √ 8 d. 3.8362319

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.