Question

if the diameter of a semicircular protector is 14 cm, then find its perimeter.

Answer 1

Diameter of the semicircular protector (D) = 14 cm

Perimeter of semicircle =
$\pi \times r + d = \pi \times \frac{d}{2} + d \\ = \frac{22}{7} \times \frac{14}{2} +14 = 22 +14 \\ = 36 \: cm$
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