Results 1 to 3 of 3

Math Help - help finding dimensions that minimize cost

  1. #1
    Newbie
    Joined
    Apr 2011
    Posts
    2

    help finding dimensions that minimize cost

    find dimensions that minimize cost for a volume at least 3.2 cu meters for a tent. the tent is 2 equilateral triangles with a rectangular base. top material costs $2.25 per square meter, and the floor material costs $1.75 per square meter. trying to minimize cost.
    Follow Math Help Forum on Facebook and Google+

  2. #2
    MHF Contributor
    Joined
    May 2010
    Posts
    1,028
    Thanks
    28
    please post your attempt so we dont waste time telling you parts that you already know.

    Outline solution:
    1)if the triangle edge length is R, find the tent depth L that makes the total volume = 3.2
    2)hence find the dimension of all sides in terms of R or L (not both)
    3)hence find the size of all surfaces and their cost
    4)differentiate to find the minimum
    Follow Math Help Forum on Facebook and Google+

  3. #3
    Newbie
    Joined
    Apr 2011
    Posts
    2

    tent

    Quote Originally Posted by SpringFan25 View Post
    please post your attempt so we dont waste time telling you parts that you already know.

    Outline solution:
    1)if the triangle edge length is R, find the tent depth L that makes the total volume = 3.2
    2)hence find the dimension of all sides in terms of R or L (not both)
    3)hence find the size of all surfaces and their cost
    4)differentiate to find the minimum
    any chance you could help me out with the differentiation? thats what I am having a hard time obtaining.
    Follow Math Help Forum on Facebook and Google+

Similar Math Help Forum Discussions

  1. Replies: 1
    Last Post: April 28th 2010, 07:55 PM
  2. Replies: 1
    Last Post: March 6th 2010, 01:45 PM
  3. Finding Dimensions
    Posted in the Algebra Forum
    Replies: 1
    Last Post: February 18th 2010, 03:13 PM
  4. Replies: 3
    Last Post: April 5th 2009, 06:48 AM
  5. Minimize Driver Cost
    Posted in the Pre-Calculus Forum
    Replies: 2
    Last Post: March 21st 2009, 03:28 AM

Search Tags


/mathhelpforum @mathhelpforum