Find the area of oblique triangle using heron's formula

The video tutorial explains how to use Heron's formula to calculate the area of a triangle. It provides a step-by-step guide on applying the formula, highlights common mistakes students make with parentheses, and offers tips for simplifying calculations. The tutorial concludes with a reminder about unit considerations when presenting the final result.

What is the approximate area calculated using Heron's formula for the sides 4, 5, and 8?

What units should be used when writing the final answer for the area calculated using Heron's formula?