Trapezoid Area Calculator

Calculate the area of a trapezoid using the formula A = (1/2) * (a + b) * h, where a and b are the lengths of the parallel sides and h is the height.

Enter the length of side a

Enter the length of side b

Enter the height

How it works

Calculate the area of a trapezoid using the formula A = (1/2) * (a + b) * h, where a and b are the lengths of the parallel sides and h is the height.


The Formula
A = (1/2) * (a + b) * h
where:
a = length of side a
b = length of side b
h = height

Worked Example
  1. Example: Find the area of a trapezoid with sides of length 5 and 7, and a height of 3

    Using the formula, we get: A = (1/2) * (5 + 7) * 3 = 18


Tips, Assumptions & Limitations
  • Make sure to enter the lengths of the parallel sides and the height in the correct units
FAQ

The formula for the area of a trapezoid is A = (1/2) * (a + b) * h, where a and b are the lengths of the parallel sides and h is the height

Enter the lengths of the parallel sides and the height, and the calculator will give you the area of the trapezoid

Companion article

How to Calculate the Area of a Trapezoid

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