How to Calculate Area of a Triangle

Calculations that anyone can do
••• projet immobilier image by Jérôme SALORT from

Whether you're carpeting a room, hanging wallpaper or shingling a roof, you may need to calculate the area of a triangle. Knowing the correct formula will make your job easier and save you time by avoiding mistakes. If it's been a while since your last math class, you may need help remembering how to calculate the area of a triangle.

    Use the formula base (b) times height (h) divided by 2 to calculate the area of a triangle (b x h / 2).

    Choose any side of the triangle as the base. If it's right triangle, use one of the sides forming the right angle.

    Measure the length of the base.

    Find the height of the triangle. The height is not necessarily one of the triangle's sides. The height will always be at a right angle, or perpendicular, to the base. Measure the height.

    Multiply the base times the height.

    Take the number that you calculated in Step 5 and divide it by 2. This will give you the area of the triangle, or the total square measurement.


    • Create a basic diagram of the triangle to help you visualize the base side and height of the triangle.

Related Articles

How to Find the Area of Triangles & Trapezoids
How to Measure the Length of the Diagonal Line of a...
How to Calculate a Circular Area
Test Your Knowledge on Middle School Science
How to Calculate Perimeter and Area Ratio
How to Calculate Area From Width & Length
How to Solve a Hexagon
How to Calculate the Square Feet on a Cube
How to Calculate the Volume of a Triangle
How to Calculate Area of an Obtuse Triangle
How to Find the Volume of a Sphere in Terms of Pi
How to Find the Missing Side of a Right Triangle
How to Calculate Volume in Cubic Centimeters
How to Find The Slope of a Line Given Two Points
How to Find the Area of Squares
How to Convert Barometric Pressure to mmHg
How to Determine Square Feet Area
How to Calculate Volume of a Rectangular Prism
How to Calculate Volume of a Circular Cylinder
How to Calculate Volume

Dont Go!

We Have More Great Sciencing Articles!