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-   -   Math Help (https://www.askmehelpdesk.com/showthread.php?t=744234)

  • Apr 14, 2013, 08:14 AM
    KyleDennis
    Math Help
    Hi, I just had this math test, and I didn't understand this question on it.

    It had two similar cylinders, one with a radius of 2 and volume 64, and another cylinder with an unknown radius but a volume of 128. I couldn't figure out the radius of the other cylinder, and it's driving me mad! Could anyone help? Thanks.
  • Apr 14, 2013, 08:31 AM
    JudyKayTee
    AMHD doesn't do homework and, unfortunately, that includes questions after you take an exam.

    Do you have a formula?
  • Apr 14, 2013, 08:54 AM
    teacherjenn4
    Great advice, Judy! Use the formula for volume of a cylinder and plug in the information you know. Post your answer and we will help you from there.
  • Apr 14, 2013, 09:40 AM
    JudyKayTee
    I finally got a math question semi-right?
  • Apr 14, 2013, 09:55 AM
    teacherjenn4
    Quote:

    Originally Posted by JudyKayTee View Post
    I finally got a math question semi-right?

    I would have said the same thing!!
  • Apr 14, 2013, 09:57 AM
    Wondergirl
    Quote:

    Originally Posted by teacherjenn4 View Post
    I would have said the same thing!!!!

    Me too! Judy rocks!
  • Apr 14, 2013, 10:12 AM
    teacherjenn4
    Quote:

    Originally Posted by Wondergirl View Post
    Me too! Judy rocks!

    Yes, she does!!
  • Apr 15, 2013, 08:08 AM
    InfoJunkie4Life
    Also keep in mind that the question asks for similar cylinders, which means the radius and height from one to another must follow the same ratio. For instance if the first height is half the height of the second one, then the radius must also be half the length of the second one.
  • Apr 15, 2013, 09:13 AM
    JudyKayTee
    Okay, now Rockin' Judy is lost again.
  • Apr 15, 2013, 09:39 AM
    Wondergirl
    Quote:

    Originally Posted by InfoJunkie4Life View Post
    Also keep in mind that the question asks for similar cylinders, which means the radius and height from one to another must follow the same ratio. For instance if the first height is half the height of the second one, then the radius must also be half the length of the second one.

    Yup.
    1) radius of 2 and volume 64
    2) unknown radius and volume of 128 (64x2).
  • Apr 15, 2013, 09:44 AM
    JudyKayTee
    If pears are 99 cents for 3 and I buy one that would be - carry the 1, no, carry the 3, no...
  • Apr 15, 2013, 09:48 AM
    Wondergirl
    Quote:

    Originally Posted by JudyKayTee View Post
    If pears are 99 cents for 3 and I buy one that would be - carry the 1, no, carry the 3, no ...

    99 divided by 3 plus tax and a tip for the bagger..
  • Apr 15, 2013, 12:12 PM
    InfoJunkie4Life
    JudyKayTee has exceeded their stored private messages quota and cannot accept further messages until they clear some space.
  • Apr 15, 2013, 12:16 PM
    Wondergirl
    Quote:

    Originally Posted by InfoJunkie4Life View Post
    JudyKayTee has exceeded their stored private messages quota and cannot accept further messages until they clear some space.

    She's very popular.
  • Apr 15, 2013, 12:20 PM
    InfoJunkie4Life
    Yes she is...

    But now I can't send Awesome Judy a message!! Wahhhhh...

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