Final answer:
To find the arc length of ABC, the angle subtending the arc is required. Without it, we cannot calculate the arc length. The angle must be in radians to use the arc length formula, As = r \( \Theta \).
Step-by-step explanation:
To work out the length of arc ABC, we would need the angle of rotation in either degrees or radians. In mathematics, the arc length (As) is given by the formula:
As = r \( \Theta \)
In this formula, \( \Theta \) is the angle of rotation in radians, and (r) is the radius of curvature, which is the same as the radius of the circle. Without knowing the angle that subtends arc ABC, we cannot calculate the exact length. However, if we know that angle in degrees (a), we can convert it to radians by the fact that 360 degrees equals 2\( \pi \) radians, and then use the formula to find the arc length.