How to use pram to approximate the integral of a data set

The video tutorial explains the right rectangular method for calculating areas. It begins with an introduction to the method, followed by a detailed step-by-step calculation. The teacher explains how to determine widths and heights, and concludes with the final calculation, resulting in a total area of 112.

Explain the difference between starting from the left and the right in the rectangular method.

What is the final calculated area mentioned in the discussion?