Question 1011041
The surface area of the box is:
{{{ 2*( 19*12 ) + 2*( 12*3 ) + 2*( 9*3 ) }}}
{{{ 456 + 72 + 54 }}}
{{{ 582 }}} in2
Now add 10%
{{{ 582 + .1*582 = 582 + 58.2 }}}
{{{ 582 + .1*582 = 640.2 }}} 
640 in2 of wrapping paper is needed