Don’t understand need and pls show work due tomorrow

I'm being volume of cylinder with 13 in. radius and 30 in height answer choices in pic

The four students in the table below each recorded the time and distance traveled while exercising. exercising distance (miles) time (minutes) gia 2 30 harris 5 50 ian 3 40 jackson 4 80 which list ranks the students from fastest walker to slowest walker? jackson, gia, ian, harris harris, jackson, ian, gia harris, ian, gia, jackson jackson, harris, ian, gia

Find the rate of change for the situation.you run 7 miles in one hour and 21 miles in three hours.