A cylindrical barrel has a diameter of 19.875 inches. Which of the following is the bestestimate of the circumference of the barrel in feet?

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asked Dec 14, 2017 42.5k views

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Ates Goral · Answer 1 · 2017-12-20T09:30:45+0000

Alright we know the formula for circumfruence is 2
$\pi$ r

So you plug it in!
Note: Radius is just the diameter split in half.

2*3.14*9.9375

2*31.20375

So the circumference of the barrel is 62.4075

A cylindrical barrel has a diameter of 19.875 inches. Which of the following is the bestestimate of the circumference of the barrel in feet?

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