Using herons formula to determine the area of a triangle

The video tutorial explains how to use Heron's formula to calculate the area of a triangle when all three side lengths are known. It begins by calculating the semi-perimeter (S) by adding the side lengths and dividing by two. The instructor then demonstrates how to substitute these values into Heron's formula to find the area, using a calculator to ensure accuracy. The process involves multiplying the semi-perimeter by the differences between the semi-perimeter and each side length, followed by taking the square root of the result. The tutorial concludes with a final area calculation and a brief Q&A session.

What is the first step in using Heron's formula when you know all three side lengths of a triangle?

• Compute the area directly

• Determine the height

• Find the semi-perimeter (S)

• Calculate the perimeter

How do you calculate the semi-perimeter (S) of a triangle with side lengths a, b, and c?

• a * b * c

• (a + b + c) / 2

• a + b + c

• (a * b * c) / 2

In Heron's formula, what operation is performed after substituting the values into the formula?

• Addition

• Subtraction

• Multiplication

• Division

What is the final step in calculating the area using Heron's formula?

• Add all the products

• Multiply the product by 2

• Take the square root of the product

• Divide the product by 2

After calculating the area using Heron's formula, what should you do with the result?

• Round it to two decimal places

• Convert it to a percentage

• Round it to the nearest whole number

• Leave it as is