Identify all boundary segments of the shaded region and sum their lengths.
• The shaded perimeter includes curved arcs and straight line segments from the figure.
• Using the given dimensions and \( \pi = \dfrac{22}{7} \):
• The total perimeter = 114 cm.
Option A (77 cm): too small — likely only counts curved arcs.
Option B (114 cm): correct — includes all boundary segments.
Option C (136 cm): too large — may use wrong radius or double-count.
Option D (169 cm): too large — may include internal lines.
Final Answer: B: 114 cm