The length of an arc, s, of a circle with radius r and angle-measure, m (in degrees) can be written by the formula: %0D%0A%0D%0A2%0D%0A%0D%0A%0D%0A=%0D%0A%0D%0A360%0D%0A. Solve for r.

1 answer

To solve for r, we rearrange the formula as follows:

s = (2 * π * r * m) / 360

To isolate r, we multiply both sides by 360 and divide by (2 * π * m):

r = (s * 360) / (2 * π * m)

Therefore, the formula to solve for r is:

r = (s * 360) / (2 * π * m)