Results 1 to 2 of 2

Math Help - Surface Area and formulas

  1. #1
    Newbie
    Joined
    Mar 2009
    Posts
    19

    Surface Area and formulas

    When dealing with Surface Areas, many teachers simply teach students to memorize a bunch of formulas. Why do you think I would encourage you to not teach students to "memorize" any of these formulas? What would be an easier way to find the surface area of any figure? Give at least 1 example of a figure and how you would find the surface area without these particular formulas.
    Follow Math Help Forum on Facebook and Google+

  2. #2
    MHF Contributor
    skeeter's Avatar
    Joined
    Jun 2008
    From
    North Texas
    Posts
    11,690
    Thanks
    448
    Quote Originally Posted by doodle08 View Post
    When dealing with Surface Areas, many teachers simply teach students to memorize a bunch of formulas. Why do you think I would encourage you to not teach students to "memorize" any of these formulas? What would be an easier way to find the surface area of any figure? Give at least 1 example of a figure and how you would find the surface area without these particular formulas.
    you have to know the basic area formulas ... rectangle, triangle, circle, etc.

    how else can one find surface area without them?

    for example, surface area of a cylinder ...

    top and bottom, two circles ... 2\pi r^2

    side is a rectangle whose base is the circumference of the top and whose height is the height of the cylinder ... 2\pi r \cdot h

    add 'em up to find the surface area , A = 2\pi r^2 + 2\pi rh

    now ... what is so difficult about that?
    Follow Math Help Forum on Facebook and Google+

Similar Math Help Forum Discussions

  1. Calculate the surface area of the surface
    Posted in the Calculus Forum
    Replies: 2
    Last Post: June 26th 2009, 04:03 AM
  2. Help finding surface area of a surface
    Posted in the Calculus Forum
    Replies: 1
    Last Post: October 3rd 2008, 04:11 PM
  3. Volume, Surface Area, and Lateral Surface Area
    Posted in the Geometry Forum
    Replies: 1
    Last Post: April 14th 2008, 11:40 PM
  4. surface area and formulas
    Posted in the Geometry Forum
    Replies: 2
    Last Post: June 16th 2007, 10:39 PM
  5. Formulas and finding surface areas.
    Posted in the Geometry Forum
    Replies: 5
    Last Post: May 24th 2006, 01:13 PM

Search Tags


/mathhelpforum @mathhelpforum