Answer:
3048 x 1.04 ^3 = 3428.585474
Both chords and diameters have two endpoints on a circle. Diameters must intersect the center of a circle.
Step-by-step explanation:
10 hours 500 miles
8 hours 270 miles
_________________
18 hours 770 miles
Average speed: 770 / 18 = 42.77;