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 Post subject: Area Question
PostPosted: Wed Sep 03, 2014 4:31 pm 
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Joined: Wed Dec 14, 2011 9:54 am
Posts: 211
Carpet is sold on rolls 3m wide, and at a cost of £11 per square metre. How much will it cost
to carpet the room shown below?

L shape room

_ 3m__
|.........|
|.........| 3m
|.........| _ 4m_
|..................|
|..................| 3m
| _ _ _ _ ___-_ _|

answer £330 DS got £110



Thanks
P.S
Sorry about the rough sketch.


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 Post subject: Re: Area Question
PostPosted: Wed Sep 03, 2014 4:52 pm 
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Joined: Mon Feb 12, 2007 1:21 pm
Posts: 11956
He has forgotten the carpet is 3 metres wide ... 10 metres in length but x 3.


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 Post subject: Re: Area Question
PostPosted: Wed Sep 03, 2014 5:38 pm 
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Joined: Wed Dec 14, 2011 9:54 am
Posts: 211
Thanks Guest55. 30m sq is the room. Price for 1m sq is 11 so 11 x 30 = £330 that is straight forward.

But when do you use the 3m wide roll in the calculation, is this relevant?


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 Post subject: Re: Area Question
PostPosted: Wed Sep 03, 2014 5:55 pm 
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Joined: Thu Apr 04, 2013 10:39 am
Posts: 654
From your diagram, he needs 3x3 = 9sqm for the top part of the room and 7x3=21sqm for the lower part.
In total he needs 30sqm. Since the cost is £11sqm, the carpet will cost £330. Does that help?

nyr


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 Post subject: Re: Area Question
PostPosted: Wed Sep 03, 2014 6:03 pm 
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Joined: Mon Feb 12, 2007 1:21 pm
Posts: 11956
I imagined a strip across the top portion from left to right ie 3metres length of the 3 m wide carpet.

Then another strip 7 m long - so 10 metres of carpet 3m wide.

Then £11 x 3 (width of carpet) x 10 (length of strip) so I did not bother to work out the area as there is no need.


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 Post subject: Re: Area Question
PostPosted: Wed Sep 03, 2014 9:10 pm 
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Joined: Wed Dec 14, 2011 9:54 am
Posts: 211
Ah makes sense. Thanks to both of you


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