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?

Question

Jamie Henderson

Mathematics

15 April, 21:05

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?

+2

Answers (1)

Know the Answer?

Bj · Answer 1

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.