Find the perimeter and area of a semi-circle, whose diameter is 14 cm.
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Step-by-step explanation:
Diameter of the semicircular protractor =14cm
Radius = 14 / 2 cm = 7 cm
Perimeter of semicircle =πr+d
Perimeter of semicircular protractor =
22 / 7 × 7 + 14 = 22 + 14 = 36
The perimeter of the semi-circular protractor is 36cm.
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