Tran wants to approximate the area underneath the curve y = 0.005x^2- 2x + 200 for 0≤ x≤ 200, shown shaded in the graph below .

He finds an initial estimate, A, for the shaded area by using FG and computing A = 1/2(200 units)(200 units)= 20,000 square units. The area of the shaded region is:

