The formula to calculate the area of a semi-circle is:
\[ \text{Area} = \pi \cdot r^2 \cdot \frac{a}{360} \]
Where:
The area of a semi-circle is defined as the total area occupied by half of the area of the circle enclosed by the given radius. For a semi-circle, the arc angle is always 180 degrees.
Let's assume the following values:
Step 1: Calculate the Area of the Semi-Circle:
\[ \text{Area} = 3.141 \cdot 10^2 \cdot \frac{180}{360} = 3.141 \cdot 100 \cdot 0.5 = 157.05 \text{ square units} \]
The area of the semi-circle is 157.05 square units.