Find the length of a circular arc

Question

subtended by an angle of π/12 rad if the radius of the circle is 60 cm angle is 15 degrees.

Answer 1

Radius of the circle (r ) = 60 cm.

Measure of the central angle in radians (θ) = π / 12 rad(15 degrees).

Arc length(s ) = r θ.

Substitute the values of r = 60 and θ = π / 12 in s = r θ.

s = 60 * π / 12

   = 5π.

Therefore, length of the circular arc is 5π cm.