Please help I do not understand

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

Using the information in the customer order, determine the length and width of the garden. enter the dimensions. length: feet width: feet

Find the rate at which the water is now flowing from the tap give your answer cubic centimetres per second