Question 977394
Outside diameter is {{{12 + 1/2 + 1/2=13}}}{{{inches}}}
The volume of the pipe (converting all units to inches),
{{{V=(pi/4)*(D[o]^2-D[i]^2)*L}}}
{{{V=(pi/4)*(13^2-12^2)(12*10)}}}
{{{V=(pi/4)*(169-144)(120)}}}
{{{V=(pi/4)*(25)(120)}}}
{{{V=750pi}}}{{{in^3}}}