Results 1 to 2 of 2

Math Help - Volume of a cylinder

  1. #1
    ImReddy
    Guest

    Volume of a cylinder

    Hello, please help me refresh my memory, I need to figure out how much concrete an eight inch diameter by eight feet tube will hold. I remember the ....3.14 thing, but can't remember how to use it. Thanks!!!
    ImReddy
    Follow Math Help Forum on Facebook and Google+

  2. #2
    Site Founder Math Help's Avatar
    Joined
    Apr 2005
    Posts
    171

    Volume of a cylinder

    8" diameter x 8'

    First find the cross sectional area of the tube which is the area of the circle with 8" diameter and then multiply that area by the length of the tube.

    The formula for the volume of a cylinder is V = \pi*r^2*L

    so V = \pi*(4in)^2*8ft

    lets convert everything to inches before we work it out

    V = \pi*(4in)^2*(8*12in)

    V = \pi*16in^2*96in

    \pi*1536in^3

    or roughly 4825.5 in^3 of cement

    check out the google conversion tool
    Follow Math Help Forum on Facebook and Google+

Similar Math Help Forum Discussions

  1. Replies: 2
    Last Post: November 18th 2011, 01:08 PM
  2. volume of a cylinder
    Posted in the Geometry Forum
    Replies: 4
    Last Post: May 30th 2011, 10:26 PM
  3. Volume of a DNA Cylinder
    Posted in the Advanced Math Topics Forum
    Replies: 1
    Last Post: September 22nd 2010, 05:31 AM
  4. Volume of Cylinder
    Posted in the Geometry Forum
    Replies: 4
    Last Post: May 6th 2009, 01:37 PM
  5. Volume for a cylinder??HELP!!
    Posted in the Geometry Forum
    Replies: 1
    Last Post: March 9th 2006, 04:04 PM

/mathhelpforum @mathhelpforum