 |
| ||
| |||
|
| Math Central | Quandaries & Queries |
|
Question from Edu, a student: I have a 12 in pipeline and 5 miles long. I need to coat it with corrosion inhibitor how much chemical will I need |
Hi,
The inside surface area of a cylinder is $\pi$ times the inside diameter times the length where $\pi$ is approximately 3.1416. You have a cylinder that has a diameter of 12 inches and a length of 5 miles. You need both dimensions in the same units so I am going to use feet. There are 12 inches in a foot and 5,280 feet in a mile so the inside surface of your pipeline is
\[\pi \times 1 \times 5 \times 5,280 \mbox{ square feet.}\]
I hope this helps,
Penny
| ||
| ||
| ||
 |
 |
|
|
||
Math Central is supported by the University of Regina and the Imperial Oil Foundation.