Results 1 to 6 of 6

Math Help - Formula for calculating the distance....

  1. #1
    Member Sazza's Avatar
    Joined
    Apr 2007
    From
    Australia
    Posts
    98

    Formula for calculating the distance....

    hey, i've just learn't about this but, here's my ques!
    The Formula for calculating the distance (d) in kilometres to the horizon is:

    d= 8 [that tick like symbol] h/5 where h is your height above sea level in metres.
    Calculate the distance to the horizon if you were standing on a rocky headland 45 m above the sea below!
    Follow Math Help Forum on Facebook and Google+

  2. #2
    is up to his old tricks again! Jhevon's Avatar
    Joined
    Feb 2007
    From
    New York, USA
    Posts
    11,663
    Thanks
    3
    Quote Originally Posted by Sazza View Post
    hey, i've just learn't about this but, here's my ques!
    The Formula for calculating the distance (d) in kilometres to the horizon is:

    d= 8 [that tick like symbol] h/5 where h is your height above sea level in metres.
    Calculate the distance to the horizon if you were standing on a rocky headland 45 m above the sea below!
    i don't know what think line symbol you are referring to
    Follow Math Help Forum on Facebook and Google+

  3. #3
    Member Sazza's Avatar
    Joined
    Apr 2007
    From
    Australia
    Posts
    98
    uh-hh on your calculator i think it's the symbol you use for square route!
    Follow Math Help Forum on Facebook and Google+

  4. #4
    is up to his old tricks again! Jhevon's Avatar
    Joined
    Feb 2007
    From
    New York, USA
    Posts
    11,663
    Thanks
    3
    Quote Originally Posted by Sazza View Post
    uh-hh on your calculator i think it's the symbol you use for square route!
    well then, couldn't you just say "square root" or better yet, "sqrt"?

    is it d = 8 \sqrt {\frac {h}{5}}?

    anyway, it doesn't matter what the formula looks like. just plug in 45 for h and solve for d
    Follow Math Help Forum on Facebook and Google+

  5. #5
    Member Sazza's Avatar
    Joined
    Apr 2007
    From
    Australia
    Posts
    98
    yer but i still do not see what i could use, to calculate that since the closest i can get to 8 is 45 divided by 5! how exactly do i do this? i haven't grasped what to do!
    Follow Math Help Forum on Facebook and Google+

  6. #6
    is up to his old tricks again! Jhevon's Avatar
    Joined
    Feb 2007
    From
    New York, USA
    Posts
    11,663
    Thanks
    3
    Quote Originally Posted by Sazza View Post
    yer but i still do not see what i could use, to calculate that since the closest i can get to 8 is 45 divided by 5! how exactly do i do this? i haven't grasped what to do!
    i cannot see why you have a problem with this, Sazza. haven't you worked with square roots before? of course, when they write the square root beside the 8 like that, they mean they are being multiplied.

    d = 8 \sqrt {\frac h5}

    when h = 45, we have:

    d = 8 \sqrt {\frac {45}5}

    = 8 \sqrt {9}

    can you continue from here?
    Follow Math Help Forum on Facebook and Google+

Similar Math Help Forum Discussions

  1. Replies: 7
    Last Post: June 7th 2012, 04:04 AM
  2. Calculating Distance between 2 circles
    Posted in the Geometry Forum
    Replies: 6
    Last Post: June 20th 2011, 04:47 PM
  3. Replies: 5
    Last Post: May 26th 2010, 05:16 PM
  4. calculating distance between members of a set
    Posted in the Discrete Math Forum
    Replies: 2
    Last Post: March 28th 2010, 07:11 AM
  5. Calculating distance road
    Posted in the Geometry Forum
    Replies: 3
    Last Post: April 21st 2009, 10:31 PM

Search Tags


/mathhelpforum @mathhelpforum