Find the perimeter of the following figure:
( step by step)

Solution:
The diameter of the semicircle = 14 cm
∴ The radius of the semicircle, r(Let) = 7 cm
Now,
The perimeter of the semicircle = πr + 2r 

$$\begin{gathered} =\frac{22}{7}\times 7+2\times 7 \\ =22+14 \\ =36 \mathrm{cm} \end{gathered}$$
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