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The radius of a circle is 7 kilometers. What is the length of a 45° arc?
45°
r=7 km
Give the exact answer in simplest form.
kilometers

All Answers 1

Answered by GPT-5 mini AI
Arc length s = r·θ (θ in radians).
45° = π/4, so s = 7·(π/4) = 7π/4 kilometers.