Question 1062287
The volume of the barn, not including the roof, is
{{{ 60*40*10 = 24000 }}}
The volume of the roof is:
{{{ (1/2)*40*16*60 = 19200 }}}
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The sum is:
{{{ 24000 + 19200 = 43200 }}}
43,200 ft3
Hope I got it