It says "A rectangle is removed from a right triangle to create the shaded region shown below. Find the area of the shaded region. Be sure to include the correct unit in your answer."

Find the area of triangle and find the area of rectangle and then find their difference to find the area of the shaded region.

A of triangle: 1/2(b)(h) = 1/2(10)(12) = 60
A of rectangle: LW = (2)(4) = 8

Area of shaded region = 60 - 8 = 52

Hope this helps :)