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Circumference of a Circle

Find the peri...

Question

Find the perimeter of a semicircular protractor whose diameter is 14 cm.

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Solution

Radius = $\frac{14}{2}$ =7cm
Perimeter of semicircle = πr + d
= $\frac{22}{7}$ ×7 + 14 cm
= 22+7 cm
=29 cm

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