Answer:
answer: 2* pi * sqrt(3)
Explanation:
Area = pi * r^2
12*pi = pi * r^2
sqrt(12) = r
r = 2*sqrt(3)
The diameter of the circle is twice as larger.
d = 2(2sqrt(3))
d = 4 sqrt(3)
the circumference of a circle is d*pi
1/2 the circumference is pi*d/2
The arc length = 1/2 the circumference
The arc length = pi*d/2 = pi * 4*sqrt(3)/2 = 2* pi * sqrt(3)