First, collect all of your materials. You will need a ruler, paper, trapezoid, something to write with and possibly a calculator.
Then, label your trapezoid to make measuring easier. You will need to label an (a), (b), height and all of your sides. The a and b make your base.
Next, measure all labeled dimensions. You will need them to find your area and perimeter.
The first step to finding your area is writing down your formula. To find the area of a trapezoid, you add sides a and b FIRST then, multiply by the height and divide by 2.
After writing down your formula, plug in your numbers.
After adding your numbers, add the a and b dimensions. After adding the a and b dimensions, multiply the sum by your height.
Divide the product by 2, because you have the area of what could be a parallelogram twice the size of your trapezoid or two trapezoids.
After finding the area, you will probably want to find pout the perimeter. Similarity to area, you start by writing down your formula. For the perimeter of a trapezoid, you add all 4 sides together.
Again, like the area you need to plug in your numbers.
The next step is to add the first two numbers in the sequence.
Then, add the third number to that sum.
Next, add the last number to the sum of the first three numbers. You have now found the perimeter of your trapezoid.
Now, you know all the steps in finding the area and perimeter of a trapezoid.
- Writing utensil