Results 1 to 2 of 2

Math Help - maths problem !

  1. #1
    Newbie
    Joined
    May 2008
    Posts
    1

    Unhappy maths problem !

    [FONT=Tahoma][SIZE=3]( i ) the circumference of a circle ( c = 2 x 3.14 x r) is related to the radius of the circle in a direct way. Draw the circles as indicated int he table below, then measure the circumference?

    ( ii ) calculate the ratio circumference divided by radius is related to the formula





    Circle Radius r (mm) Circumference C (mm) Circumference radius
    A 6
    B 10
    C 15
    D 19
    E 29







    ( iii) explain how these results help to determine the formula for the circumference. That is, explain how the ratio circumference radius is related to the formula ?


    ???
    Follow Math Help Forum on Facebook and Google+

  2. #2
    Forum Admin topsquark's Avatar
    Joined
    Jan 2006
    From
    Wellsville, NY
    Posts
    10,211
    Thanks
    419
    Awards
    1
    Quote Originally Posted by johana View Post
    [font=Tahoma][size=3]( i ) the circumference of a circle ( c = 2 x 3.14 x r) is related to the radius of the circle in a direct way. Draw the circles as indicated int he table below, then measure the circumference?

    ( ii ) calculate the ratio circumference divided by radius is related to the formula





    Circle Radius r (mm) Circumference C (mm) Circumference radius
    A 6
    B 10
    C 15
    D 19
    E 29







    ( iii) explain how these results help to determine the formula for the circumference. That is, explain how the ratio circumference radius is related to the formula ?


    ???
    When you construct these circles and divide the circumference by the radius you should note that the answer is just about the same for all five circles. So if C/r is a constant then the formula for the circumference must be C = kr, where k is the constant you found when you measured it.

    -Dan
    Follow Math Help Forum on Facebook and Google+

Similar Math Help Forum Discussions

  1. SAT maths problem
    Posted in the Algebra Forum
    Replies: 2
    Last Post: October 20th 2010, 07:39 PM
  2. maths problem
    Posted in the Differential Equations Forum
    Replies: 0
    Last Post: February 27th 2010, 06:17 AM
  3. a maths problem
    Posted in the Algebra Forum
    Replies: 5
    Last Post: March 22nd 2009, 02:20 PM
  4. maths problem
    Posted in the Algebra Forum
    Replies: 2
    Last Post: September 14th 2007, 07:12 AM
  5. Replies: 0
    Last Post: September 5th 2007, 03:50 AM

Search Tags


/mathhelpforum @mathhelpforum