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

Given:

Diameter of the semicircular protractor = 14 cm

Radius of the protractor = cm = 7 cm

∵ Perimeter of semicircle = πr + d

∴ Perimeter of semicircular protractor = × 7 + 14 = 22 + 14

= 36 cm

__Hence, the perimeter of the semicircular protractor is 36 cm.__

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