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The perimeter of a full circle is 2*pi*r. Where, pi is the mathematical constant that is the ratio of any circle's circumference to its diameter, approximately equal to 3.14, and r is the radius of the circle. The perimeter of a semi circle, assumed to be half of a full circle is pi*r where pi and r are previously defined.

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Wiki User

13y ago

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what is the perimeter of a half circle if its diameter is 13mm

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Anonymous

4y ago
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Q: What is the perimeter of a semi circle?
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