In a unit circle, the radian measure of the central angle is equal to the length of the . A:Raduis B:intercepted arc C:Circumfrence D:Diameter

B:intercepted arc

Step-by-step explanation:

Recall from the knowledge of geometry:

That arc (s) = θ * r(1)

Here;

θ is known as the central angle which is measured in radians

r is the radius of the dimensionless

Hence, suppose the unit circle have a radius of 1 m length. Then, it is pertinent to understand that the arc will also varies directly proportional to the central angle.

your answer would be 12

answer:

a=9

step-by-step explanation: lmk if you need a explanation