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for a button to fit through its buttonhole the hole needs to be the size of the buttons diameter. what size buttonhole is needed for a bottom with the circumference of 7.38cm

Respuesta :

Catya
Circumference; C = π2r
Diameter; D = 2r

So then ...
C = πD

7.38 = πD
7.38 / π = D

2.35 cm = D

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