Answered

What is the volume? 30 inch diameter and 5 feet tall.


I get 24.54369 cubic feet and 183.59 gallons. This is correct right?


I ask this because this question seems wrong unless I round up..


Here is the question


A flow rate of rate of 85 gpm enters a circular tank that is 30 inches in diameter and

5 feet tall, and then overflows out. Calculate the detention time in minutes.


Answers to choose from

(1) 2.2

(2) 5.2

(3) 10.4

(4) 15.5


Well to find this we volume / flow


183.59 / 85 = 2.15 gpm



If we look at (1) 2.2 and we times that by 85 we get the volume should be 187. This question seems wrong unless I round up. What are your thoughts? Is the question wrong unless we round up? What are your thoughts?

Verified Answer :

paytonhudgins

It would be 1)2.2 because 183.59/85 is 2.15988235. If you multiply: 2.15988235*85, you get 183.59. So your math is all correct, so unless your formula is wrong, your answer is correct. So I guess you're supposed to round up.

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