How do you do this ? can someone explain and

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

Can someone me with the property questions for 12 13 and 14 plz

How long must $542 be invested at a rate of 7% to earn $303.52 in interest? in a easier way