25Nov/093
Moving Safe
A heavy safe is to be moved. Two cylindrical steel bats of diameter 7 centimeters are used as rollers.
When the rollers have made one revolution, how far will the safe have moved forward?
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watchman was paid for awaking not for sleeping so that he can see dreams.. – 05Feb12
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November 26th, 2009 - 15:57
2 * 22/7*7/2= 22 cms.
November 26th, 2009 - 15:56
2*22/7*7/2=22cms
diameter=7cm
radius=7/2
November 25th, 2009 - 11:21
Perimeter of circle = 2 *pi*R
= 2*22/7*7
= 44 cms