Area of the sector: Assertion and reasoning — task. Mathematics CBSE, Class 10.

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Assertion \((A)\): The length of the minute hand of a clock is 4 \(cm\). Then the area swept by the minute hand in 5 minutes is 4.2\(cm^2\)

Reason \((R)\): The length of an arc of a sector of a angle '\(θ\)' and radius '\(r\)' is given by \(=\)

l = \frac{θ}{360 °} 2 π r

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11. Area of the sector: Assertion and reasoning