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 Post subject: Non-calculator Qu
PostPosted: Tue Jan 27, 2009 12:34 pm 
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Joined: Mon Feb 20, 2006 1:29 pm
Posts: 1805
Location: Berkshire
Came across following question, on GCSE Non-calculator.
at first glance it lookd do-able, but then it wasn't. :(

Surface area of a cube is 60cm(sq).
What is the volume?

Got to 10cm(sq).. for one side, but without a calculator I'd think it was pretty difficult to get the sq root of 10.


Any advise wecome...

Maybe a different approach?


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 Post subject:
PostPosted: Tue Jan 27, 2009 1:04 pm 
Are you sure they haven't told you to leave it as surd? ie. Volume = 10 square root sign 10. They often do this.


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PostPosted: Tue Jan 27, 2009 2:03 pm 
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Joined: Mon Feb 20, 2006 1:29 pm
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Location: Berkshire
It's ok, spoke to Maths teacher who advised it was a misprint should of read 600cm(sq). Which of course makes sense. :D


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PostPosted: Tue Jan 27, 2009 2:08 pm 
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Joined: Wed Oct 29, 2008 12:40 am
Posts: 887
:lol:

numbers all did not add up and brain very tired now. :shock:
but at least realise brain not useless.


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PostPosted: Tue Jan 27, 2009 2:13 pm 
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Joined: Mon Feb 20, 2006 1:29 pm
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Location: Berkshire
:lol:

Tis true :D


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