What is the area of the shaded triangle, shown here?
Area =
Area of rectangle - Area of three right triangles =
(8) (6) - (1/2) [ 4*5 + 2*8 + 3*6 ] =
48 - (1/2) [ 20 + 16 + 18] =
48 - (1/2) [ 54] =
48 - 27 =
21
