Friday, March 28, 2008

The Formula

My brother called the other day with a problem.

He had a 1” pipe (that’s the inside diameter) that was 280 feet long, and he needed to know how much antifreeze to buy to fill it completely.

I told him I had no idea, but did happen to know somebody who would be able to figure it out. John is a guy I work with who always seems to know the answer, so I asked him.

This is what he figured out:

Take the diameter of the pipe, squared: .5 x .5 = .25
Multiply that by Pi: .25 x 3.413 = .85325

Take the length of the pipe and turn it into inches: 280 x 12 = 3360
Multiply that by the result of the above calculations: 3360 x .85325 = 2866.92

That answer is in cubic inches.
Convert that to gallons = 12.41104

Therefore, you need 13 gallons of antifreeze!

I called my brother back and gave him the results, and sure enough = it was dead on.

Way to go, John!

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