The figure is a composite of a right-angled triangle and a semicircle.
The perimeter of the triangle alone is 24 cm.

• From the figure, the semicircle sits on one side of the triangle.
• The perimeter of the composite figure = (the two exposed sides of the triangle) + (the arc of the semicircle).
• Measure or identify the diameter from the figure; the semicircle arc = \(\pi r\).
• Using \(\pi = 3.14\), compute the arc length and add to the exposed sides.

Final Answer: 48 cm