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Find the perimeter of the adjoining figure, which is a semicircle including its diameter.

Q. 7.     Find the perimeter of the adjoining figure, which is a semicircle including its diameter.

             

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It is given that the diameter of semi-circle is 10 cm.

We know that

Circumference of semi circle is = \pi r

Circumference of semi-circle with diameter 10 cm  including diameter is

\Rightarrow \left ( \frac{22}{7}\times \frac{10}{2} \right )+10 = 15.7+10=25.7 \ cm

Therefore, Circumference of semi-circle with diameter 10 cm  including diameter is 25.7 cm

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