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The diameter of a quarter is 23.9 mm. Find the circumference.

User FarFarAway
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1 Answer

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i think the circumference is 75.04, because:

the formula for radius when you only have the diameter is d / 2, so:

23.9 / 2
= 11.95

now that we have our radius, the formula for circumference is:

2 x r x π
so,

2 x 11.95 x 3.14 = 75.04

...at least that’s what i got.
User Jsegal
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8.5k points

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