NEED HELP LIKE NOW 15 points if answered!!!!!!!
how do you work it out
1 answer:
Remark
You have to stare at this for a moment before you catch on. When you fold the arc into a circle, 8pi becomes the circumference of the base circle.
Formula
C = 2*pi*r
C = 8pi
Solution
8pi = 2pi * r Divide both sides by 2pi
8pi / 2 pi = r
4 = r Answer
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