[tex]\text{Find the surface area:}\\\\\text{Area of triangle:}\,\frac{1}{2}bh\\\\\frac{1}{2}(6)(8)\\\\\frac{1}{2}(48)\\\\24\\\\\text{There are two sides with triangles, so multiply it by 2}\\\\24*2=48\\\\\text{Area of a rectangle:}\,b*h\\\\6*12=72\\\\12*10=120\\\\12*8=96\\\\\text{Add all of your values:}\\\\48+72+120+96=336\\\\\boxed{336\,\, in^2}[/tex]
