SOLUTION: Hi 2 closed cylinders are located top and bottom.each cylinder has radius of 11cm height 9cm. In between them is a cylinder with dimensions radius 2cm height 10cm.what is total s

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Question 1076631: Hi
2 closed cylinders are located top and bottom.each cylinder has radius of 11cm height 9cm. In between them is a cylinder with dimensions radius 2cm height 10cm.what is total surface area.
The textbook solution is 560pi but I cant understand the solution.
Thanks
Answer by josgarithmetic(39621) About Me  (Show Source):
You can put this solution on YOUR website!
Assuming all disc parts are not open and the cylinder in the middle each share a circle where it meets the top and bottom cylinder


2%2A11%5E2%2Api%2B2%2A%2811-2%29%5E2%2Api%2B2%2A2%2A2%2A9%2Api%2A11%2B2%2A10%2A2pi

%282%2A121%2B2%2A9%5E2%2B8%2A9%2A11%2B400%29pi

%28242%2B162%2B72%2A11%2B400%29pi

1596pi