Como hago para resolver 5 sobre 7 cm²

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

Divide. write in the simplest form. 4 1/6 divided by 10

Which point-slope form equation represents a line that passes through (3,-2) with a slope of -4/5