Question 367358
Since the diameter is {{{d=7}}}, the radius is {{{r=d/2=7/2=3.5}}}. So {{{r=3.5}}}



{{{V=pi*r^2*h}}} Start with the volume of a cylinder formula.



{{{V=pi*(3.5)^2(12)}}} Plug in {{{r=3.5}}} and {{{h=12}}}.



{{{V=(3.14)(3.5)^2(12)}}} Replace {{{pi}}} with {{{3.14}}} (note: Use more digits of {{{pi}}} to get better accuracy).



{{{V=(3.14)(12.25)(12))}}} Square {{{3.5}}} to get {{{12.25}}}.



{{{V=461.58}}} Multiply {{{3.14}}}, {{{12.25}}} and {{{12}}} to get {{{461.58}}} (this value is approximate).




So the volume is approximately 461.58 cubic inches. 



So the pipe can hold approximately 461.58 cubic inches of water.