Answer:
6pi
Step-by-step explanation:
First find the circumference of the entire circle
C = 2*pi*r
C = 2*pi*4
C = 8pi
We have 3/4 of the circle so multiply the circumference by the fraction of the circle
3/4*8pi
18.84
Arc length = r × theta
4 × 3pi/2
4 × 3 × 3.14/2
