Composite Figures, SM-Bank 007

Find the perimeter of the figure below correct to one decimal place. (2 marks)

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\(21.9\ \text{cm (1 d.p.)}\)

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\(\text{Perimeter}\)	\(=2\ \text{straight sides}+1\ \text{semi-circle}\)
	\(=6+8+\dfrac{\pi d}{2}\)
	\(=14+\dfrac{\pi \times 5}{2}\)
	\(=21.8539\dots\)
	\(=21.9\ \text{cm (1 d.p.)}\)