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Thread: maths question
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7th June 2008, 12:58 AM #16
The perimeter of the square is 330/2 = 165 cm since half of the sides
are "interior" to the square. so the side length is 165/4 = 41.25cm
and the area is 41.25*41.25 = 1701.563 sq cm
Correction, the center rectangles will only have one external edge, so
if rectangle is a * b then we get
2a = 3b
12a + 12b = 330
solving for b..
b = 7.666cm , a = 11.5 cm
square side is 3b, oe 23 cm
square area is 23*23 = 529 sq cm
QEDLast edited by RayG; 7th June 2008 at 01:09 AM. Reason: forgot inner sides
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7th June 2008, 01:00 AM #17
I know that is what I mean, you take a first impression and start running without actually reading it and processing it sometimes.
Use to be mine, sold it to a 15 year old two months ago to make more space in the shed for my woodworking and to reduce the hobbies/toys - first born is on the way.
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7th June 2008, 01:02 AM #18
You on drugs Ray??
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7th June 2008, 01:06 AM #19
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7th June 2008, 01:10 AM #20SENIOR MEMBER
- Join Date
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7th June 2008, 01:10 AM #21
It's a shame when you don't have room in your life for all your loves. Both time and space are limited, come on science.
Drugs, must be doing drugs!!
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7th June 2008, 01:11 AM #22
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7th June 2008, 01:14 AM #23
Rays diagram
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7th June 2008, 01:16 AM #24
It's ok Ray that was good value have another cupa mate. Hey maybe you're right who knows at this point.
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7th June 2008, 01:21 AM #25
a a
+--------+--------+
|............|...........| b
|............|...........|
+--------+--------+
|............|...........| b
|............|...........|
+--------+--------+
|............|...........| b
|............|...........|
+--------+--------+
for it it be square 2a must = 3b,
adding up the edges of all the rectangles 2*6*a + 2*6*b = 330
so 2*6*3b + 2*6*b = 330
b = 7.666.
so side of square must be 23 cm and area is 23*23 = 529 sq cm
More caffiene.. need more caffiene...Last edited by RayG; 7th June 2008 at 01:24 AM. Reason: html zaps spaces in ascii art ..
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7th June 2008, 01:22 AM #26
I think Arty has done a runner. Possible reasons:
- Does not have the answer
- Typo in the first place meant the question is wrong
- Is busy copying the the possible anwers into his assignment (he'll get extra marks for Ray's anwer)
- Just likes to give us all the
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7th June 2008, 01:24 AM #27
Ray are you in real estate, what floor area is your house?
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7th June 2008, 01:25 AM #28
I think your on the money Burnsy. Some of the emo's are great fun.
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7th June 2008, 01:26 AM #29SENIOR MEMBER
- Join Date
- Sep 2007
- Location
- Melbourne
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Ray, its late and I could be wrong but if you combine these two equations, b = 11
so is it irish coffee we are on tonight?????
your approach assumes he wants rectangles arranged 3 x 2 but you can do 6 on top of each other too so I am not sure what spirit wants?
Oh well back to my coffee!!!!!!!
Chipman
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7th June 2008, 01:30 AM #30
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