You are looking for a speed in miles per hour, so start by converting 90 minutes into hours.
90/60 = 1.5
90 minutes = 1.5 hours
speed = distance/time = (105 miles)/(1.5 hours) = 70 mph
Step-by-step explanation:
i think option a is the correct answer
Answer:
12566.37061435917
or
4000π
Step-by-step explanation:
the equation is 50π×80
this is because you have to find the area of the circle which is diameter times pi and then you multiply that by the height of the cylinder