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July 25, 2014

July 25, 2014

Posted by **Ramesh Reddy** on Sunday, August 21, 2011 at 4:49am.

The minute hand of a clock is 12cm long.

Find the area of the surface of the clock described by the minute hand in 35min.

- maths -
**RAJU**, Sunday, August 21, 2011 at 6:23am270

- maths -
**Reiny**, Sunday, August 21, 2011 at 9:39amtotal area = π(12^2) = 144π

area covered in 35 minutes = (35/60)(144π)

= 84π

= appr. 264 cm^2

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