Question 884997
{{{drawing(300,300,-10,10,-10,10,grid(1),blue(line(-5,3,4,3)),blue(line(4,3,4,-8)),blue(line(4,-8,-5,3)),circle(-5,3,0.2),circle(4,3,0.2),circle(4,-8,0.2))}}}
It's a right triangle so you can use the two legs to get the area.
{{{A=(1/2)bh=(1/2)(4-(-5))(3-(-8))}}}
{{{A=(1/2)(9)(11)}}}
{{{A=99/2}}}