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Find the length of a circular arc

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

asked Mar 4, 2014 in GEOMETRY by dkinz Apprentice

1 Answer

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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.

answered Apr 7, 2014 by lilly Expert

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