( π/3 / (2 π ) = 1/6 so 1/6 of the way around
so
(1/6) ( 2 π R) = (40/6) π = 20 π / 3
The radius of a circle is 20. What is the length of an arc that subtends an angle of π/3 radians?
Give the exact answer in simplest form.
2 answers
s = rθ = 10 * π/3 = 20π/3