what is the area of the triangle below?

Answer:
Step-by-step explanation:
area of shaded triangle=area of triangle below the diagonal-(area of small triangle+area of trapezoid)
=1/2(7*5)-(1/2 *4*1+(1+5)/2*3)
=35/2-(2+9)
=35/2-11
=(35-22)/2
=13/2
=6.5 sq. units