Question 16
In the figure below, the arcs PMS and HIR are portions of concentric circles with center at O. Central angles HIO and IOR are 15° and 30°, respectively. Arc HI is $\frac{3\pi}{4}$ m. The ratio of radius OS to OR is 4:3. Find the area of the shaded region. Use $\pi=\frac{22}{7}$.
