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Dmitry Fedorkov · Answer 1 · 2024-03-31T05:22:19+0000

Answer:

Below

Explanation:

The ENTIRE perimeter of a circle is pi * d

a semi circle circumference is 1/2 of this 1/2 pi * d PLUS the diameter line

1/2 pi * ( 2 mm) + 2mm = 5.14 mm