How do i find the arc length if i know the area?

Answer 1

Use the formula for the area of a circular sector, and solve for the angle.For a circular sector: area = radius squared times angle / 2

(Note: The angle is supposed to be expressed in radians; and in this specific problem, there is no need to convert it to degrees.)

Since you know the area and the radius (according to the comments added to this question), you can solve for the angle.

Once you know the angle (in radians!), the arc length is simply angle x radius.

Answer 2

With the information given, you cannot. You need the radius or the central angle.