Can anyone help me on this?

Fiona races bmx around a circular dirt course. if the radius of the course is 70 meters, what is the total distance fiona covers in two laps of the race? a. about 30,772 meters b. about 15,386 meters c. about 879.2 meters d. about 439.6 meters e. about 219.8 meters23 points hurry

Collin did the work to see if 10 is a solution to the equation r/4=2.4

Biggest exam of the which of the following are polynomial functions?