### Home > CALC > Chapter 1 > Lesson 1.4.2 > Problem 1-161

1-161.

The parabola is graphed below. Use four trapezoids of equal width to approximate the area under the parabola for

The height of each trapezoid is

Use the eTool below to visualize the flag.

Click the link at right for the full version of the eTool: Estimating Area Under a Curve eTool