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#1 2012-09-09 14:16:02

tina123
Member
Registered: 2012-04-29
Posts: 83

divide a rectangle in two block

Consider this problem : http://i1069.photobucket.com/albums/u472/tina12354/exam.png

I  wanna divide a rectangle into two blocks where 1st block should have 30% of  total block . any idea ..

How to do it ?

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#2 2012-09-09 15:48:31

bobbym
Administrator
From: Bumpkinland
Registered: 2009-04-12
Posts: 90,879

Re: divide a rectangle in two block

Hi;

Maximum percentage of what?


In mathematics, you don't understand things. You just get used to them.

I agree with you regarding the satisfaction and importance of actually computing some numbers. I can't tell you how often I see time and money wasted because someone didn't bother to run the numbers.

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#3 2012-09-10 00:20:25

tina123
Member
Registered: 2012-04-29
Posts: 83

Re: divide a rectangle in two block

bobbym wrote:

Hi;

Maximum percentage of what?

sorry .....
I meant to say , 1st block have minimum percentage as compare to 2nd block.
say block  1 have 30% and block2 is 70% .

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#4 2012-09-10 00:39:07

bobbym
Administrator
From: Bumpkinland
Registered: 2009-04-12
Posts: 90,879

Re: divide a rectangle in two block

Hi tina123;

I have the same question. Percentage of what? Area? Points?


In mathematics, you don't understand things. You just get used to them.

I agree with you regarding the satisfaction and importance of actually computing some numbers. I can't tell you how often I see time and money wasted because someone didn't bother to run the numbers.

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#5 2012-09-10 00:40:00

tina123
Member
Registered: 2012-04-29
Posts: 83

Re: divide a rectangle in two block

bobbym wrote:

Hi tina123;

I have the same question. Percentage of what? Area? Points?

area ...
percentage of block1 area ,,

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#6 2012-09-10 00:54:59

bobbym
Administrator
From: Bumpkinland
Registered: 2009-04-12
Posts: 90,879

Re: divide a rectangle in two block

Hi;

How do you want to split the big rectangle up? With one line or more than one line. Please look at the drawings.

View Image: one.gif View Image: three.gif View Image: two.gif

In mathematics, you don't understand things. You just get used to them.

I agree with you regarding the satisfaction and importance of actually computing some numbers. I can't tell you how often I see time and money wasted because someone didn't bother to run the numbers.

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#7 2012-09-10 01:00:02

tina123
Member
Registered: 2012-04-29
Posts: 83

Re: divide a rectangle in two block

bobbym wrote:

Hi;

How do you want to split the big rectangle up? With one line or more than one line. Please look at the drawings.

like 1st figure. i meant by one line .

Last edited by tina123 (2012-09-10 01:00:40)

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#8 2012-09-10 01:13:14

bobbym
Administrator
From: Bumpkinland
Registered: 2009-04-12
Posts: 90,879

Re: divide a rectangle in two block

For the 8 x 16 rectangle you have in the picture. This is one answer.

View Image: 2012-09-10_060949.gif

In mathematics, you don't understand things. You just get used to them.

I agree with you regarding the satisfaction and importance of actually computing some numbers. I can't tell you how often I see time and money wasted because someone didn't bother to run the numbers.

Offline

#9 2012-09-10 01:38:10

tina123
Member
Registered: 2012-04-29
Posts: 83

Re: divide a rectangle in two block

bobbym wrote:

For the 8 x 16 rectangle you have in the picture. This is one answer.

hy .. bottom block is small .
second block should be 1st block.

I want 30% area should be for 1st block and the rest 70% area should  be for 2nd block .
you did opposite .


and please let be know how did u do that .
thanks

Last edited by tina123 (2012-09-10 01:41:03)

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#10 2012-09-10 08:07:14

bobbym
Administrator
From: Bumpkinland
Registered: 2009-04-12
Posts: 90,879

Re: divide a rectangle in two block

Hi;

You want the top block to be the small one?


In mathematics, you don't understand things. You just get used to them.

I agree with you regarding the satisfaction and importance of actually computing some numbers. I can't tell you how often I see time and money wasted because someone didn't bother to run the numbers.

Offline

#11 2012-09-10 11:49:51

tina123
Member
Registered: 2012-04-29
Posts: 83

Re: divide a rectangle in two block

bobbym wrote:

Hi;

You want the top block to be the small one?

yes

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#12 2012-09-10 12:36:50

bobbym
Administrator
From: Bumpkinland
Registered: 2009-04-12
Posts: 90,879

Re: divide a rectangle in two block

Try this one then.

View Image: 2012-09-10_173421.gif

In mathematics, you don't understand things. You just get used to them.

I agree with you regarding the satisfaction and importance of actually computing some numbers. I can't tell you how often I see time and money wasted because someone didn't bother to run the numbers.

Offline

#13 2012-09-10 12:51:57

tina123
Member
Registered: 2012-04-29
Posts: 83

Re: divide a rectangle in two block

bobbym wrote:

Try this one then.

you did not mention that how did u do that .

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#14 2012-09-10 12:56:08

bobbym
Administrator
From: Bumpkinland
Registered: 2009-04-12
Posts: 90,879

Re: divide a rectangle in two block

Hi;

30% of ( 8 * 16 ) is 38.4. You need a rectanghle with an area of 38.4.

The width is 8 so we can only adjust the length from 0 to 16. We solve that with algebra.

L = 4.8

So the dimensions of the rectangle are 4.8 x 8. See the drawing.


In mathematics, you don't understand things. You just get used to them.

I agree with you regarding the satisfaction and importance of actually computing some numbers. I can't tell you how often I see time and money wasted because someone didn't bother to run the numbers.

Offline

#15 2012-09-10 12:58:01

tina123
Member
Registered: 2012-04-29
Posts: 83

Re: divide a rectangle in two block

bobbym wrote:

Hi;

30% of ( 8 * 16 ) is 38.4. You need a rectanghle with an area of 38.4.

The width is 8 so we can only adjust the length from 0 to 16. We solve that with algebra.

L = 4.8

So the dimensions of the rectangle are 4.8 x 8. See the drawing.

k alright thanks

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#16 2012-09-10 12:59:16

bobbym
Administrator
From: Bumpkinland
Registered: 2009-04-12
Posts: 90,879

Re: divide a rectangle in two block

Hi;

Are you clear on what I did?


In mathematics, you don't understand things. You just get used to them.

I agree with you regarding the satisfaction and importance of actually computing some numbers. I can't tell you how often I see time and money wasted because someone didn't bother to run the numbers.

Offline

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