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anonymous

  • 5 years ago

surface area of cylinders height 10 and radius of 10 how do i work this out

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  1. anonymous
    • 5 years ago
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    2 π r2 + 2 π r h

  2. anonymous
    • 5 years ago
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    \[surface area of cylinder is =2pir ^{2}+2pirh\] so = 2*pi*100+2*pi*100

  3. anonymous
    • 5 years ago
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    It is a closed cylinder or open cylinder????

  4. anonymous
    • 5 years ago
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    yes

  5. anonymous
    • 5 years ago
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    what does yes mean ??? open cylinder like a pipe or closed cylinder like a pepsi can??

  6. anonymous
    • 5 years ago
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    closed cylinder see i know to use 2 π r2 + 2 π r h and when i do i get but it give me answer and that is not one of them

  7. anonymous
    • 5 years ago
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    What r your options??

  8. anonymous
    • 5 years ago
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    340 ,150,130,176,384,360,112,720

  9. anonymous
    • 5 years ago
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    Any unit for radius and height like m, cm etc.???

  10. anonymous
    • 5 years ago
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    well see i got it now they were doing it like \[\pi*5^2=25\pi then 2\pi5=10\pi 10\pi*10=100\pi +\pi*5^2=25\pi at the end you add 25\pi+25\pi+100\pi\] and gett 150pi

  11. anonymous
    • 5 years ago
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    From where has the 5 come??? Y said radius was 10 and height was 10

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