Trapezoid: Area

How to find the area of a trapezoid: formula, 1 example, and its solution.

Formula

Formula

A = [1/2](b1 + b2)h

A: Area of a trapezoid
b1, b2: Bases
h: Height

Example

Example

Solution

The bases are 5 and 8.
h = 4

So A = [1/2](5 + 8)⋅4.

Cancel the denominator 2
and reduce 4 to, 4/2, 2.

5 + 8 = 13

13⋅2 = 26

So the area of the given trapezoid is 26.