The area of a minor sector of a circle is 3.85 cm² and the measure of its central angle is 36°. Find the radius of the circle.

Doubtly Asked 24 Oct 2026 Save WhatsApp Report

1 answer

Answer: r = 3.5 cm

\[\frac{36}{360}\times\frac{22}{7}\times r^2=3.85\]

\[\frac{22}{70}r^2=3.85\Rightarrow r^2=\frac{3.85\times70}{22}=12.25\]

\[r=3.5\ \text{cm}\]

Doubtly AI · 24 Oct 2026 AI-verified · Oct 2026 Report

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