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Good Evening Friends,
A lady has just come to your shop and ordered 12 planters with 12 sides each.
What would be the length of the sides with a circumscribed diameter of 1 foot?
Also what degree of angle would you cut on the edges of the boards?
Respectfully, :)
Ralph,
As you know, you are posting on an Australian board. Just so you know, we don't say "math" we say "maths".
I'm not having a go at you, just pointing out another difference between English and American.
I have no idea what the answer is to your question. :o
Respectfully
Craig
..and probably with our metric system, she'd be thinking of a 10 sided pot, which would have an angle of 144° but because we couldn't work out the length of the sides, (Hopeless at maths you see), she would have to take a size of " about that"!!
Over to someone else now....I hear my Mum calling.....
Cheers,
P
And if she does not like that she could go to Bunnies who have a large range in stock and if not they will order it in. :D Or sell her a few half barrells so you can first drink the wine then cut them in half. :DQuote:
Originally Posted by bitingmidge
Peter.
but having first drunk the contents of the wine barrel you would not be in any fit state to go anywhere near a power tool for about year. and if you did the cut on the barrel would probably look like a dogs hind leg!
secondly whats wrong with a square planter box?
circumscribed sounds like its not 2 far removed from a Jewish tradition! :eek:
Cheers Ian
12 sides means 24 angles, one for each end of each board. 360/24 = 15 degrees off square for each end of each board.
Method #1. The circumference of a circle with diameter 1' is pi x diameter = the value of pi (3.14159265358979323846264) in feet. 12 arcs, so each arc is 3.14159265358979323846264/12 in feet or 3.14159265358979323846264". The straight line between the ends of an arc is less than the arc itself.There is a formula for calculating that length, but I don't remember it.
Method #2. You end up with 12 triangles each with 2 sides of 12 inches and the angle between those equal sides is 15 degrees. There is a method of calculating the length of the 3rd side, but I don't remember that either.
Take it from here, someone. PLEASE!!!!!
In a previous life I was a matrimonial lawyer. The only maths I needed to know was division by 2.
Hello Guys,
I am going to try to attach something that will help you out in figuring this quiz.
Hope it works, if not I will type it in when I answer the quiz.
Respectfully, :)
I thought it was by 3. One third to each of party and the remaining thirds was the lawyer's fee. :DQuote:
Originally Posted by Robert WA
Peter.
360/12 = 30 degrees per sector.
Internal angles of any triangle = 180 degrees. Triangle is symmetrical, therefore both other angles = 75 degrees. (30 +75 +75 = 180) This is the angle of cut.
Dia = 1' Radius = 0.5' = 6"
Split triangle in 2 to form two right angled triangles.
Simple trig rules for any right angle triangle as below. We know angle A = 75 degrees. Length c = 0.5'
COS 75 degrees = b / 0.5 Therefore b = COS 75 x 0.5 = 0.1294'
Length of side = 2 x b = 0.2588' = 3.1058" = approx 3 7/64"
Good Morning Friends,
Tonz, you are indeed correct in your answer of 3 7/16" per side with a 15 degree angle.
Fellows if you will look up to my other post you will find the polygon formula that I attached. just click onto it and enlarge it, then print it out for some great help to you in figuring these different things out.
Don't worry as it is a JPEG image and guaranteed virus free. Email me if you have any questions.
Thank you for your support.
Respectfully, :)