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Thread: breakfast rebate
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16th May 2007, 11:08 AM #1
breakfast rebate
if l may ,,it all started when l did my anything l should know with the kids this mornings (as they know l will tickle to get the information
)find out the boy 11yo is in the mathematical olympiads so there a bit fuss made blu blu .This is a big contest schools put in teams and they are tring to get a good score ,its like a footy team thing ,kid want to make the team and our shows that don"t give up on the public system our school ranks up there with the bigger schools
debate starts now
question 1-D
A rectangle has a perimeter of 90cm .the length of the rectangle is 25 cm
more than the width
find the of sq cm in the area of the rectangle
you have 6 Minutessmile and the world will smile with you
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16th May 2007, 11:10 AM #2
20cm?
I may not have gone where I intended to go, but I think I have ended up where I needed to be.
My Other Toys
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16th May 2007, 11:19 AM #3
is that your answer 20cm sq
smile and the world will smile with you
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16th May 2007, 11:22 AM #4
10cm x 35cm gives an area of 350cm2
I will put it to my year 6/7 maths class this morning and see how long it takes.
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16th May 2007, 11:22 AM #5
20cm wide....
500sq cm (Not good at this calc)I may not have gone where I intended to go, but I think I have ended up where I needed to be.
My Other Toys
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16th May 2007, 11:30 AM #6
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16th May 2007, 11:39 AM #7
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16th May 2007, 11:41 AM #8
The number of prime numbers is infinite. Prove it
Don't take me seriously.Visit my website at www.myFineWoodWork.com
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16th May 2007, 11:42 AM #9
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16th May 2007, 11:47 AM #10
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16th May 2007, 11:48 AM #11
GOLD MEMBER
- Join Date
- Jun 2003
- Location
- Sunbury, Vic
- Age
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I am with burnsy - area is 350 sq cm
Calculation is Length = width + 25
2W + 2 W + 50 = 90 (perimeter)
4W = 40
W = 10
L = 10 + 25 = 35
Area is L x W = 10 x 35 = 350
Here endeth the maths lessonTom
"It's good enough" is low aim
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16th May 2007, 11:49 AM #12
Don’t bother guys. These things are always won by the Chinese.
Visit my website at www.myFineWoodWork.com
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16th May 2007, 11:52 AM #13
Where did 10 x 35 come from....????
The question was perimiter = 90cm
and the length was 25cm....
from this two lenths of 25cm's = 50 cm
Perimiter - two lengths = twice width
90 - 50cm = 40cm
so width = 40cm/2
So rectangle = 20cm X 25cm...
Length x Width = Area
20cm X 25cm = 500Sq cmI may not have gone where I intended to go, but I think I have ended up where I needed to be.
My Other Toys
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16th May 2007, 11:55 AM #14
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16th May 2007, 11:55 AM #15
no 90-50 =40 and you make rectangle once you cut it in half to back e/lenths l have made rectangle yes we know the question says the length is 25 so that 50 ok your left with 40 half that 20 20 x 25 =500
smile and the world will smile with you
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