Composite Figures, SM-Bank 009

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

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\(36.6\ \text{m (1 d.p.)}\)

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\(\text{Perimeter}\)	\(=2\ \text{straight sides}+2\ \text{semi-circles (ie one circle)}\)
	\(=2\times 12+\pi d\)
	\(=24+\pi \times 4\)
	\(=36.5663\dots\)
	\(=36.6\ \text{m (1 d.p.)}\)