Download Article Show Download Article A trapezoid, also known as a trapezium, is a 4-sided shape with two parallel bases that are different lengths. The formula for the area of a trapezoid is A = ½(b1+b2)h, where b1 and b2 are the lengths of the bases and h is the height.[1] If you only know the side lengths of a regular trapezoid, you can break the trapezoid into simple shapes to find the height and finish your calculation. When you're finished, just label your units!
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Thanks for submitting a tip for review! Advertisement ReferencesAbout This ArticleArticle SummaryX To find the area of a trapezoid, start by adding together the length of the bases, which are the 2 sides of the trapezoid that are parallel with each other. Then, multiply that number by the height of the trapezoid. Finish by dividing the product by 2 to find the area. For example, if one of the trapezoid's bases is 8 inches long and the other one is 12 inches long, first you'd add those together and get 20 inches. Then, if the trapezoid's height was 10 inches, you'd add that to 20 and get 30. Just divide 30 by 2 to get 15, which is the area of the trapezoid. To learn how to calculate the area of a trapezoid if you only know the sides, scroll down! Did this summary help you? Thanks to all authors for creating a page that has been read 660,426 times. Did this article help you?What is a formula of trapezium?Area = (1/2) h (a+b)
a and b are the length of parallel sides/bases of the trapezium. h is the height or distance between parallel sides.
What is the formula for finding the length of a trapezium?Since this problem provides the length for both of the bases as well as the total perimeter, the missing sides can be found using the following formula: Perimeter= Base one Base two (leg), where the length of "leg" is one of the two equivalent nonparallel sides.
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