What is the area the shaded triangle?

Area of large triangle (both shaded and un-shaded)
A = 1/2 bh = 1/2(6+24)(8) = 120

area of un-shaded area = 1/2bh =1/2(6)(8) = 24

area of shaded area = 120 - 24 = 96

answer
96 mm^2 (second choice)