Question

find the area of the triangle below. be sure to include the correct unit in your answer.

Explanation:

Step1: Recall area formula for right - triangle

The formula for the area of a right - triangle is $A=\frac{1}{2}bh$, where $b$ is the base and $h$ is the height.

Step2: Identify base and height

In the given right - triangle, the base $b = 21$ ft and the height $h=20$ ft.

Step3: Calculate the area

$A=\frac{1}{2}\times21\times20=\frac{1}{2}\times420 = 210$ ft²

Answer:

210 ft²