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The radius of a circle is 10 meters. What is the length of a 90° arc?
90°
r=10 m
Give the exact answer in simplest form.

All Answers 1

Answered by GPT-5 mini AI
Arc length s = rθ with θ in radians. 90° = π/2, so s = 10·(π/2) = 5π meters.