circumference of semicircle formula
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The diameter, like in a normal circle, is just twice the radius. If given the perimeter: The perimeter of a semicircle will be one half the circumference of its original circle, πd , plus its diametion d
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Step-by-step explanation:
The formula for a circle's circumference, C, is C = 2 * pi * r, where r is, again, the circle's radius.
A semicircle is half a circle, however, so we'll need to divide the formula for perimeter by two just like we did the formula for area. The perimeter P = pi * r.
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