Explanation:
Hello! Remember you have to write complete questions in order to get good and exact answers. Here you haven't provided any graph, so I could help you providing my own picture. As the statement says we have three triangles and want to know the total area and the area of one of them. The three triangles are congruent so we need to calculate just the area of one of them and multiply it by 3. Therefore:
TOTAL AREA (At):
[tex]A_{t}=3A_{1} \\ \\ \\ Where: \\ \\ A_{1}=\frac{1}{2}bh \\ \\ A_{1}=\frac{1}{2}(3)(4) \\ \\ A_{1}=6units^2 \\ \\ \\ Then: \\ \\ A_{t}=3(6)=18units^2[/tex]
AREA OF EACH TRIANGLE:
So the area of each triangle is:
[tex]A_{1}=A_{2}=A_{3}=6units^2[/tex]
