1 Answer

KevSheedy · Answer 1 · 2019-11-26T20:46:33+0000

Perimeter = 20.56mm

Given the perimeter, find the diameter

$\pi D$ = 20.56
D = 20.56 ÷
$\pi$
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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