Question

4 radians

Answer 1

Answer:

D. 8 cm

Step-by-step explanation:

Given :

Let the length of the arc be = l

radius of the arc, r = 2 cm

degree of angle subtended at the center by the arc, θ = 4 radian

Now we know that the angle subtended by an arc at the center of the circle whose radius is 2 cm will be,

θ = l/r

Therefore, we can write,

l = θ x r

l  = 4 x 2

  = 8 cm

So the length of the arc is 8 cm.