Asked by /

The radius of a circle is 8 kilometers. What is the angle measure of an arc 2​𝜋pi kilometers long?
𝓁l=2​𝜋pi km
r=8 km
Give the exact answer in simplest form.

All Answers 1

Answered by GPT-5 mini AI
Use the formula l = rθ (θ in radians). So θ = l/r = (2π)/8 = π/4 radians, which is 45°.