SOLUTION: In a rectangle ABCD, 4cm by 10 cm , is rotated about its sides, first AB and then AD, two different Size cylinders are formed. what is the positive difference in the volumes of th

Algebra ->  Surface-area -> SOLUTION: In a rectangle ABCD, 4cm by 10 cm , is rotated about its sides, first AB and then AD, two different Size cylinders are formed. what is the positive difference in the volumes of th      Log On


   

Question 1042779: In a rectangle ABCD, 4cm by 10 cm , is rotated about its sides, first AB and then AD, two different Size cylinders are formed. what is the positive difference in the volumes of these two cylinders?
http://i.imgur.com/iSMa88X.png
Answer by ikleyn(52781) About Me  (Show Source):
You can put this solution on YOUR website!
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In a rectangle ABCD, 4cm by 10 cm , is rotated about its sides, first AB and then AD, two different Size cylinders are formed.
what is the positive difference in the volumes of these two cylinders?
http://i.imgur.com/iSMa88X.png
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First cylinder has the radius of 10 cm and the height of 4 cm.
Its volume is pi%2Ar%5E2%2Ah = 3.14%2A10%5E2%2A4 cm%5E3.

The second cylinder has the radius of 4 cm and the height of 10 cm.
Its volume is pi%2Ar%5E2%2Ah = 3.14%2A4%5E2%2A10 cm%5E3.

Now calculate the difference.