$13.5 is the correct answer for you
Answer:
r = Sqrt(81.2)
Step-by-step explanation:
V = pi * r^2 * h
255 = pi * r^2 * 1
255 = pi * r^2
255/pi = r^2
81.2 = r^2
Sqrt(81.2) = r
Answer:
7.5minutes
Step-by-step explanation:
If it travels 2kilometers every 3 min, that means it travels 2/3 kilometer per minute. Then divide 5 kilometers by 2/3kilometers/min, which gets you 7.5minutes