### Home > PC3 > Chapter 13 > Lesson 13.2.1 > Problem 13-61

13-61.

Write down the sums (but do not add them up) that you would use to approximate using six sub-intervals and:

Left endpoint rectangles

This sum should start at

and end at.Right endpoint rectangles

This sum should start at

and end at.Trapezoids

Draw all of the trapezoids. Then calculate the area for each.