The length of the minute hand of a clock is 3.5 cm . Find the area swept by the minute hand in 30 minutes
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The area swept by the minute hand in 30 minutes in the length of the minute hand of a clock is 3.5 cm .
Area = πr^2/2 = 22/7 ×3.5^2 /2
= 19.25 cm^2
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