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The length of the minute hand …

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The length of the minute hand of a clock is 14cm. Find the remaining area which is not swept by the minute hand in 5 minutes.

Posted by Shubh Patel 4 years, 5 months ago

CBSE > Class 10 > Mathematics

2 answers

Saloni Harinkhede 4 years, 5 months ago

564.66 CM^2.

0Thank You

Adithya Dev A 4 years, 5 months ago

Angle at 1 minute = 6°. Radius = 14 cm. Therefore, angle at 5 minutes = 30°. Thus, area swept in 5 minutes = πr^2 Angle / 360° = 22/7 * 14 * 14 * 30°/360° = 22 * 2 * 14 * 1/12 = 616/12 cm^2. Area not swept = πr^2 - area swept = 616 - 616/12 = 564.66 cm^2.

3Thank You

ANSWER

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