Question

compute the area of the triangle (round to the nearest integer).
a 20 units²
b 30 units²
c 40 units²
d 45 units²
e 50 units²

Explanation:

Step1: Recall area formula

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

Step2: Identify base and height

By counting the grid - squares on the graph, assume the base $b = 10$ units and the height $h = 6$ units.

Step3: Calculate the area

$A=\frac{1}{2}\times10\times6= 30$ square units.

Answer:

B. 30 units²