No qeustoin, just want to give people points
2 answers:
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Answer:
Step-by-step explanation:
you need the arc length formula .. do you have it?
s = r ∅
s is the arc length in radians but you can make it in degrees just by
using s = 2πr (θ/360)
the angle is 180 for the picture.
so the arc length is just r
r= 4
*4 = 12.56637.... approx