Sun, 13 Apr 2008 08:03:41 -0700 (PDT) from <dzogchener@[EMAIL PROTECTED]
>:
> I have been swatting up using a book I purchased, which has a question
> about area:
I think the root of your difficulties may be that this is not a
problem about area; it's a problem about perimeter. The fence goes
around the area, it doesn't cover the area.
> How much will it cost to build a wall round a house that is 25 metres
> long and 75 metres wide, if the cost of 50 cm is £10?
So 1 metre costs 20 pounds.
The fence will be 25+75+25+75 = 200 metres (without allowing for a
gate). A 20 pounds per, the cost is 4000 pounds.
> Your options are
> A) £4,000, B) 40,000 or C) £400. The answers are meant to be
> estimations,
I don't know what that means, since (A) is exactly correct.
> What is the answer? I have calculated the answer, but when I checked
> it I found I was wrong,
Please, please, in future show us wheat you did and what answer you
got. We can give you *far* better help in that way, because we can
point out the specific error you're making. You learn much more this
way than by simply looking at our solutions.
--
Stan Brown, Oak Road Systems, Tompkins County, New York, USA
http://OakRoadSystems.com
****kata ga nai...
|
