Answer:b
Step-by-step explanation:
Must be in the same units
6 ft/ 24 ft (8yds x 3 = 24 ft)

Let's use yards instead
6 ft = 2 yds
so
2 yds/8 yds again is 1/4
D=vt
d=105 x 3
d=315
.....................
The "cylinder" has a diameter of 6, and therefore its radius is half that, or 3, thus