Question

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

Explanation:

Step1: Identify base and height

This is a right triangle, so the two legs (20 ft and 21 ft) are the base and height.

Step2: Apply triangle area formula

The area of a triangle is $\frac{1}{2} \times \text{base} \times \text{height}$. Substitute the values:
$\frac{1}{2} \times 20 \times 21$

Step3: Calculate the result

First compute $20 \times 21 = 420$, then $\frac{1}{2} \times 420 = 210$. The unit for area is square feet ($\text{ft}^2$).

Answer:

210 $\text{ft}^2$