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 8

$cm$ . Then the area swept by the minute hand in 5 minutes is 20.8

$cm^2$

Reason

$(R)$ : The length of an arc of a sector of a angle '

$θ$ ' and radius '

$r$ ' is given by

$=$

$l = \frac{θ}{360 °} 2 π r$ .

Both A and R are true, but R is not the correct explanation of A.
Both A and R are false.
A is false, but R is true.
Both A and R are true, and R is the correct explanation of A.
A is true, but R is false.

$1$

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