What is the arc length when θ = pi over 3 and the radius is 5 cm?
The length of an arc of a circle is the circumferential length of the curve called an arc.
Answer: 5.23 cm is the arc length when θ = pi over 3 and the radius is 5 cm.
Radius = 5 cm
Angle = π/3
To find: Arc length(A)
The formula of arc length is
A = radius × angle(in radian)
A = 5 × π/3
A = 5 × 3.14/3 (π = 3.14)
A = 15.70/3 = 5.23 cm
You can also calculate arc length using an arc length calculator.