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March 28, 2015

Posted by **peter** on Sunday, January 9, 2011 at 4:44am.

AB = DC = 4cm

AD = CB = 2cm

- geometry -
**peter**, Sunday, January 9, 2011 at 5:01amThe real problem is that I do not comprehend the question.

The part I'm really stumbling over is the "rotated about the side AB". I have no idea what that means..

I have another question that is quite similar...so if anyone can explain, it would be greatly appreciated.

- geometry -
**drwls**, Sunday, January 9, 2011 at 6:20amWhat you get when you perform the indicated rotation of the rectangle about side AB is a cylinder with radius = 2 cm and length h = 4 cm. The line AB is the axis of the cylinder.

The volume is

V = pi*r^2*h = 16*pi cm^3

Do the calculation.

- geometry -
**peter**, Sunday, January 9, 2011 at 11:21amI've got it!

Thank you very much for your help!

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