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cylinders

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osman123 | 13:44 Sat 10th Jan 2009 | Quizzes & Puzzles
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the volume of a cylinder,radious is 65cm ,height 1.4 m . any 1 get it ?
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Avatar Image roslyn251254
another formula to learn!
Volume of a cylinder = pi x r x r x h
Vol = 3.142 x 0.65 x 0.65 x 1.4 = 1.86 m cubed
Remember to change all the units to metres.
13:50 Sat 10th Jan 2009
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how do you fine the radious with only knowing the cicumferance ? e.g if the cicumferance was 85 cm how would i do it ?
13:54 Sat 10th Jan 2009
Avatar Image sddsddean
Circumference is pi x D, so in your example 85cm = pi x diameter, so diameter is 27.056cm and radius is half of that.
13:58 Sat 10th Jan 2009

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