Understanding the Concept:
To compare two shaded regions, we first observe the geometrical shapes involved. The area of most plane figures depends on their dimensions. For example, the area of a circle is proportional to $r^2$, and similarly, other shapes also depend on their respective formulas. If two figures are constructed using the same measurements, their areas may turn out to be equal even if their orientation is different.
Method of Comparison:
1) Identify the formula for area of each figure.
2) Substitute the given dimensions into the formula.
3) Simplify both areas separately.
4) Take the ratio $\frac{Area_1}{Area_2}$ and reduce it to simplest form.
If both shaded regions are formed using identical dimensions and are merely arranged differently, their numerical areas will be equal.
Final Result:
The ratio of the two shaded areas = $1 : 1$.
