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> how many gal of water is in a 6in. pipe 12in. tall ?
> and what is pi and r2?
> thank you for help.
> will9675
> 15mar09
Pi (greek letter π) is a mathematical constant; its value is circles's circumference divided by diameter or circle's area divided by square value of radius. Value of π is 3.14159…
r² is square value of circle's radius (r × r).
If pipe has 6" diameter (i.e. 3" radius) and is 12" tall, then it can content: π × (3 inches)² × 12 inches = 339.292007 cubic inches (in³).
Because of 1 U.S. gallon is 231 cubic inches, then 339.292007 in³ / 231 = 1.46879657U.S. gallons.
Your pipe may content 1.469 U.S. gallons of watter.
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