We can see that the rhombus is composed of 4 congruent right triangles. The area of a triangle is:
Where:
b is the base of the triangle
h is the height of the triangle
If the rhombus is composed of 4 identical right triangles, then the area of the rhombus is:
Thus, the area of the rhombus is twice the height times the base.
We can see in the figure that:
b = 13m
h = 2m
Then, we can write:
Thus, the answer is: