Question: What is the measure of the central angle that subtends an arc of length 5 cm in a circle of radius 10 cm?
Options:
Correct Answer: 60 degrees
Solution:
The formula for the arc length is L = rθ, where θ is in radians. Thus, θ = L/r = 5/10 = 0.5 radians. Converting to degrees, θ = 0.5 * (180/π) ≈ 28.65 degrees, which is closest to 30 degrees.
