Ma3deean1gAllySc Ma3deean1gAllySc

25-07-2016
Mathematics

contestada

In order for a button to fit through its buttonhole, the hole needs to be the size of the button's diameter. What size buttonhole is needed for a button with a circumference of 9.42 centimeters?

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Аноним Аноним

29-07-2016

The buttonhole size needed to fit the button is 3cm.

The solution is as follows:
Solve for d when C = 9.42 cm=2πr
d = 2r
r = C/2π = 9.42 / 2π
r = 1.49923956393
d = 2(1.49923956393) = 2.99847912785 or 3cm

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