4.1 linear speed and arc length

What is the circumference?

When using the equation $$s=r\theta$$ , can you plug in 270° for theta?

When using the equation $$s=r\theta$$ , the units for theta must be (a)   .

Find the arc length s for this sector if theta is 1 radian.
(drawing not to scale)
$$s=r\theta$$

Find theta for this sector if the arc length is 7 cm. This answer is in radians.

Find the arc length.  The angle given is π/4. Leave your answer in terms of π.

Convert 120° to radians. Write your answer down so you can use it for the next question.

Find the length of the arc of this sector. Write your answer down to use in the next question.

Find the length of the arc.