Author Topic: Figuring Out the Math  (Read 7065 times)

Offline mmgfarb

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Re: Figuring Out the Math
« Reply #90 on: November 01, 2016, 03:34:28 PM »
How do you get 50,000 points by buying staples gift cards
Buy $10k of staples gift cards on an ink card.
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Offline mendy from lakewood

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Re: Figuring out how to maximize the chase ink card for 5 x
« Reply #91 on: November 01, 2016, 03:51:06 PM »
How do you get 50,000 points by buying staples gift cards
welcome to the forums! use a CC that gives you 5 points per dollar at staples and buy 10k in gift cards
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Offline ckmk47

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Re: Figuring Out the Math
« Reply #92 on: November 01, 2016, 05:46:42 PM »

"EARN 5 POINTS PER $1 on the first $50,000 spent in combined
purchases at office supply stores and on cellular phone, landline, internet
and cable TV services each account anniversary year."


Staples and other office supply stores sell gift cards to stores you may be using. They also -for a fee- sell visa gift cards that can be used for every day spending that would only earn 1 point per dollar spent. Of course, you use your Ink to pay your 'cellular phone, landline, internet and cable TV services', too.


Offline Alexsei

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Re: Figuring Out the Math
« Reply #93 on: September 10, 2017, 05:11:02 PM »


is there any thread for area calculations?

Here's specifically what I'm looking for
I would like to know the ft or m in the below area (note the measurements are in meters)



אם אתם בונים בית חבד בכל מקום אני מראה לכם בית חבד של ציון

Offline ckmk47

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Re: Figuring Out the Math
« Reply #94 on: September 10, 2017, 06:39:26 PM »
Alexsei,
I printed out your diagram on a graph paper, to increase accuracy.  But my calculations are still rough.  The exact angles of the turns and other lengths were approximated.
I got 363 square meters.

Offline Am

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Re: Figuring Out the Math
« Reply #95 on: September 11, 2017, 05:01:34 PM »
Alexsei,
I printed out your diagram on a graph paper, to increase accuracy.  But my calculations are still rough.  The exact angles of the turns and other lengths were approximated.
I got 363 square meters.
Can you share the formula used?

Offline aygart

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Re: Figuring Out the Math
« Reply #96 on: September 11, 2017, 06:19:53 PM »
Can you share the formula used?
The basic concept is to make a square and triangles
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Offline srap

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Re: Figuring Out the Math
« Reply #97 on: September 11, 2017, 08:46:13 PM »
Can you share the formula used?
a2+b2=c2 gives you the length of any given side where c is the hypotenuse of a right triangle.
Area of a rectangle:  length x width
Area of a triangle:    1/2 (base x height)

@Alexsei-Is this a question on a test somewhere?  The needed missing pieces are too perfectly placed to be random.  IOW, just missing enough to be able to figure out the problem.  :-X ;) :)

Offline Alexsei

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Re: Figuring Out the Math
« Reply #98 on: September 11, 2017, 08:50:01 PM »
Thanks

No it's an actual architect plan, I've since found a tool online https://www.sketchandcalc.com/ That you can upload the image and redraw however it could not replicate the numbers it was fine on the 3 straight sides but wrong on the odd ones so looks like it didn't get the scale to 100% or the architects markings are wrong





« Last Edit: September 11, 2017, 08:54:53 PM by Alexsei »
אם אתם בונים בית חבד בכל מקום אני מראה לכם בית חבד של ציון

Offline ckmk47

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Re: Figuring Out the Math
« Reply #99 on: September 11, 2017, 09:31:14 PM »
Alexsei,
I printed out your diagram on a graph paper, to increase accuracy.  But my calculations are still rough.  The exact angles of the turns and other lengths were approximated.
I got 363 square meters.
CORRECTION: 229.4 square meters


Sorry- I added something wrong.
Area of large square: 175.8 m2
Area of lower triangle: 39.6 m2 (large triangle minus tiny side triangle)
Area of triangle at right: 14 m(a little more approximate because of tiny corner at the bottom)
« Last Edit: September 11, 2017, 09:37:22 PM by ckmk47 »

Offline srap

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Re: Figuring Out the Math
« Reply #100 on: September 13, 2017, 02:39:34 PM »
CORRECTION: 229.4 square meters


Sorry- I added something wrong.
Area of large square: 175.8 m2
Area of lower triangle: 39.6 m2 (large triangle minus tiny side triangle)
Area of triangle at right: 14 m(a little more approximate because of tiny corner at the bottom)
Aargh!  Please don't post one of these again  >:( (...but it was fun  :) )

Similar results to @ckmk47.  I got approximately 233m2 (175.8+13.18+44.58)

Area of large square: 175.82 (15.98x11)
Area of "triangle" at right: 13.18 m(1/2 (1.22+1.1) (10.52+.1.6)-.88)  where .88= 1/2 ((1.22+1.1) x 1 .6)and 1.12+1.62=1.942
Area of lower triangle: 44.58 m2 (two large triangles minus tiny left side triangle) = 38.83+8.29-2.54
                                    where top triangle = 1/2 (4.86x15.98)
                                    and bottom triangle uses formula (perimeter = 17.07+1.05+16.7=17.41) 
                                    Area =  √---of ( p(p-a)(p-b)(p-c) ) where p is half the perimeter or  1/2(a+b+c)  (Heron's Formula)
                                    and tiny left triangle = 1/2 (1.07x4.86) where 1.072+4.742=4.862
                                                                       
« Last Edit: September 13, 2017, 02:45:54 PM by srap »

Offline Alexsei

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Re: Figuring Out the Math
« Reply #101 on: September 13, 2017, 06:26:07 PM »
 Thanks all
אם אתם בונים בית חבד בכל מקום אני מראה לכם בית חבד של ציון

Offline SketchAndCalc

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Re: Figuring Out the Math
« Reply #102 on: September 15, 2017, 02:59:05 PM »
Hi Alexsei
My name is Elliott Dobbs and I'm the founder of SketchAndCalc.com  :)

I'm grateful for the mention here on DansDeals. You mention you had difficulty getting the numbers to match the plans, and I wanted to offer some advice.

SketchAndCalc uses pure coordinate geometry math to calculate area, so it's possible the plan isn't to perfect scale. Once you have the rough shape you can adjust each line length to match the plan in two ways:

1. Manually, by clicking a vertex and adjust it's position using your keyboards cursor keys until the number match the plan.

2. Automatically, by clicking a length label and entering in the value. You'll note that once the label is selected it points to the vertex that will move when entering in a new value. Clicking again toggles between vertices.

It's worth pointing out that setting the drawing scale when you import is important, by drawing a known length as accurately as possible. I'd recommend nominating the longest length when setting the drawing scale. Anyway, I hope these tips prove helpful, I've added a 1 minute video intro below.



Cheers
Elliott
SketchAndCalc.com
Calculate the Area or Perimeter of Any Shape you Draw

Offline srap

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Re: Figuring Out the Math
« Reply #103 on: September 15, 2017, 03:06:53 PM »
Hi Alexsei
My name is Elliott Dobbs and I'm the founder of SketchAndCalc.com  :)

I'm grateful for the mention here on DansDeals. ...
Cheers
Elliott
Hey--that's  8) .  There is some software out there that scours the web for the mention of your website?

Offline SketchAndCalc

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Re: Figuring Out the Math
« Reply #104 on: September 15, 2017, 03:25:00 PM »
Hey srap
 ;D Yep, I'm using Mention.com.

It's pretty handy, and allows me to find out how folks are using sketchandcalc.
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Calculate the Area or Perimeter of Any Shape you Draw