Question

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

Explanation:

Step1: Recall area formula

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

Step2: Identify base and height

From the figure, the base $b = 18$ cm and the height $h=8$ cm.

Step3: Calculate the area

Substitute $b = 18$ and $h = 8$ into the formula: $A=\frac{1}{2}\times18\times8$. First, $\frac{1}{2}\times18 = 9$, then $9\times8=72$.

Answer:

$72$ cm$^{2}$