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08-03-2018
Mathematics

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the perimeter of a semi circle is 20.56 MM. What is the semicircle of radius?

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08-03-2018

Perimeter = 20.56mm

Given the perimeter, find the diameter
[tex] \pi D[/tex] = 20.56
D = 20.56 ÷[tex] \pi [/tex]
D = 6.54 mm

Perimeter of the Semicircle = half the circle arc + the straight line (Diameter)
Semicircle = 0.5(20.56) + 6.54cm
Semicircle = 16.83mm

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