If an angle is pie radians, what is the arc length in radians?

arc length = pi x (the radius)

in that case

To determine the arc length in radians, we can use the formula:

Arc Length = Angle * Radius

However, it seems there might be a misunderstanding in your question regarding the term "pie radians." Did you mean "π radians," which represents an angle in terms of π (pi)?

If so, let's assume we have an angle of π radians and a specific radius value. We can calculate the arc length by multiplying the angle (π radians) by the radius.

For example, let's say the angle is π radians and the radius is 5 units:

Arc Length = π * Radius

Arc Length = π * 5

Arc Length ≈ 15.71 units (rounded to two decimal places)

Therefore, if the angle is π (pi) radians, the arc length in radians would be the product of the angle and the radius, given the specific radius value.