Question 1063099
Choose either of the known sides as the triangle's base.  As example, choose AB as the base.  Then the height is {{{AC*sin(46.6)}}}.  This height is {{{40*sin(46.6)}}}.


Cost to spend,  {{{(1/2)20*40*sin(46.6)(0.79)*DOLLARS}}}.

This cost to spend is  {{{400*sin(46.6)*(0.79)*DOLLARS}}}


{{{229.6*dollars}}}