Question 983224
Solve for the unknown side length x.  That is most of the problem.


This sum of surface areas must be 112:

{{{2(10*3)+2(10*x)+2(3*x)=112}}}


{{{60+20x+6x=112}}}
{{{26x=112-60}}}
{{{13x=56-30}}}
{{{13x=26}}}
{{{highlight(x=2)}}}


VOLUME,  {{{10*3*x=10*3*2=60*cubicfeet}}}