Answer: Area = 28.2m²
Explanation: The triangle YXZ is shown in the figure below.
Area of a triangle is calculated by the formula:

According to the figure, the base of this triangle is b = 8.3m.
Height is a perpendicular line created from one side and intersecting the opposite angle.
To determine the height, use trigonometric relations to angle 68:

h = 7.3*sin(68)
h = 7.3*0.93
h = 6.8
Now, area of triangle YXZ is

A = 28.2
Area of triangle YXZ is 28.2m².