Pretty clever, Lenny!
--
Larry Martin
Woodworking for the Blind
--joining the world of blind wood workers
-------------- Original message ----------------------
From: "Lenny McHugh" <[EMAIL PROTECTED]>
> Hi David and all,
> The formulas mention finding the square root. Since my talking calculater
> does not have the square root function built in I use this technique. Hope
> my math is correct and that it is written well enough.
> Lenny
> The perfect squares are obvious for example 3 squared is 9, 4 squared is 16,
> 5 squared is 25
>
> If the number is not a perfect square this is one fairly easy way to
> estimate the root
>
>
>
> 1. First find the closest squares that surround your number.
>
> 2. Divide your number by one of those square roots.
>
>
>
> 3. Calculate the average of the result of step 2 and the root.
>
>
>
> 4. By using the value calculated in step 3, repeat steps 2 and 3 until you
> have an accurate number.
>
>
>
> Problem: Calculate the square root of 10.
>
>
>
> 1. Locate the two closest surrounding perfect squares.
>
> Solution:
>
>
>
> 1. 3squared = 9 and 4squared = 16, the surrounding perfect squares.
>
> 2. Divide 10 by 3. 10/3 = 3.3333, round off to 3.33.
>
>
>
> 3. Average 3.33 and 3. (3.33 + 3)/2 = 3.165
>
>
>
> Repeat step 2: 10/3.165 = 3.159
>
> Repeat step 3: Average 3.159 and 3.165. (3.159 + 3.165)/2 = 3.162
>
>
>
> Answer:
>
> 3.1623 squared equal to 10? 3.162 x 3.162 = 9.998
>
>
>
> If this is not accurate enough for you, you repeat steps 2 and 3.
>
>
>
> ----- Original Message -----
> From: "David Ferrin" <[EMAIL PROTECTED]>
> To: <blindhandyman@yahoogroups.com>
> Sent: Saturday, April 28, 2007 12:33 AM
> Subject: Re: [BlindHandyMan] calculating the area of a triangle
>
>
> Well I don't claim to understand either of these formulas very much but I
> have combined both of these posts in to a single file. The first method uses
> the vertical sides being equal where the second none of the sides are equal
> at all. I invite you guys to check out my handy work, but I didn't change
> any of the mathematical information.
>
> http://www.jaws-users.com/handyman/CalculatingTheAreaOfATriangle.html
>
> David Ferrin
> Never purchase the first version of anything. This message brought to you by
> Windows Vista. Smart Computing March 2007
> ----- Original Message -----
> From: "Michael Baldwin" <[EMAIL PROTECTED]>
> To: <blindhandyman@yahoogroups.com>
> Sent: Friday, April 27, 2007 10:35 PM
> Subject: RE: [BlindHandyMan] calculating the area of a triangle
>
>
> David,
> There are two methods for calculating the area of a triangle that I know of.
> First method works best if it is a right triangle, one angle is a 90 degree
> angle.
> Area equals base times the height divided by two.
> A triangle with a base of 3 inches, height of 4 inches would be
> A=(3*4)/2
> A=12/2
> A=6
> The area would be 6 square inches.
> The second method works better if you do not know the height, or do not feel
> like figuring the height.
> First figure up the perimeter of the triangle. This example we will use a
> triangle with side A 15 inches, side B 10 inches, and side C 7 inches.
> Perimeter equals A plus B plus C
> P=15+10+7
> P=32
> Now for the area
> Area equals the square route of the perimeter divided by 2 times the
> perimeter divided by 2 minus side A times the perimeter divided by 2 minus
> side B times the perimeter divided by 2 minus side c
> A=sqt((32/2)((32/2)-15)((32/2)-10)((32/2)-7))
> A=sqt(16(16-15)(16-10)(16-7))
> A=sqt(16*1*6*9)
> A=sqt(864)
> A=29.39 square inches.
>
> Michael
>
>
>
> -----Original Message-----
> From: blindhandyman@yahoogroups.com [mailto:[EMAIL PROTECTED]
> On Behalf Of David Ferrin
> Sent: Friday, April 27, 2007 20:24
> To: blindhandyman@yahoogroups.com
> Subject: [BlindHandyMan] calculating the area of a triangle
>
> Would somebody please try posting this information again but in English this
> time? I'd like to put it up on the web, unfortunately never having
> trigonometry none of it made any sense to me enough to code in an HTML file
> at least. Also please use an example to explain the formula.
> David Ferrin
> Never purchase the first version of anything. This message brought to you by
> Windows Vista. Smart Computing March 2007
>
>
>
> To listen to the show archives go to link http://acbradio.org/handyman.html
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>
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>
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>
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>
>
> To listen to the show archives go to link
> http://acbradio.org/handyman.html
> or
> ftp://ftp.acbradio.org/acbradio-archives/handyman/
>
> The Pod Cast address for the Blind Handy Man Show is.
> http://www.acbradio.org/news/xml/podcast.php?pgm=saturday
>
> The Pod Cast address for the Cooking In The Dark Show is.
> http://www.gcast.com/u/cookingindark/main.xml
>
> Visit The Blind Handy Man Files Page To Review Contributions From Various
> List Members At The Following address:
> http://www.jaws-users.com/handyman/
>
> Visit the new archives page at the following address
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> For a complete list of email commands pertaining to the Blind Handy Man list
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[Non-text portions of this message have been removed]
To listen to the show archives go to link
http://acbradio.org/handyman.html
or
ftp://ftp.acbradio.org/acbradio-archives/handyman/
The Pod Cast address for the Blind Handy Man Show is.
http://www.acbradio.org/news/xml/podcast.php?pgm=saturday
The Pod Cast address for the Cooking In The Dark Show is.
http://www.gcast.com/u/cookingindark/main.xml
Visit The Blind Handy Man Files Page To Review Contributions From Various List
Members At The Following address:
http://www.jaws-users.com/handyman/
Visit the new archives page at the following address
http://www.mail-archive.com/blindhandyman@yahoogroups.com/
For a complete list of email commands pertaining to the Blind Handy Man list
just send a blank message to:
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