The shaded area is the difference between two semicircles.<br><br>Area = area of large semicircle − area of small semicircle.<br><br>\(= \frac{1}{2}\pi R^2 - \frac{1}{2}\pi r^2 = \frac{1}{2}\pi(R^2 - r^2)\).<br><br>From the figure, read the two radii. Using \(\pi = \frac{22}{7}\) or 3.14.<br>The shaded area works out to 57.75 cm&sup2;.<br><br>Final Answer: 57.75 cm&sup2;