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Maths & Physics Help

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astarmathsandphysics:

--- Quote from: Roxy on May 11, 2009, 07:34:12 am ---Im stuck guyz
I cant do Q20a,c i) and ii)
May june 2008 P2
anyone ..?

--- End quote ---

ci)Times the area by (103)2= 106


ii)Divide your answer toci) by 1.5

Ukhti-R:
but why to the power of 6 and not 
cuz, its mcube to mm cube
soisnt that 100x100x100x10x10x10 ?
and for a) I did (95/360x piex160x160)-(95/360xpiex100x100)
but Im getting it rong...
 :(

Ukhti-R:
astar?  u there ?

astarmathsandphysics:

--- Quote from: Roxy on May 11, 2009, 08:04:27 am ---astar?  u there ?

--- End quote ---
1m3=(1000mm)3=1000000000mm3

Yes you are right

Ukhti-R:
pheww..! lol. okay and for section a, i my method correct
because Im getting a different answer than the mark scheme

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