Mathematics paper 4 helper

[tess128]

Here you go test128
c)First convert the 1.3mm to m you will get it as 0.0013
you already have height of the segment and the total area of the segment
so you need to find the radius
0.0013*pie*r^2=2 and then you make r as the subject of the formula and find the radius

d)First you need to get the total area that is 50.4/0.12=420
The next step is to find the perimeter, so as you in the diagram in the previous page that you 2sides of length 0.8
and the below one only is 1.2 and so the total will be 0.8+0.8+1.2=2.8
If you multiply the length which you have to find into the total perimeter, you will get the area
so you have the area and the perimeter you need to find the length
Here you go 420/2.8=150(this is the answer)


Hope this helped.(Good luck for your tommorow's examination)

thx soooo much
the exam was a little bit confusing today :S

 

[Keeemoman]

Hope you get an A*
Just pray for it and you will receive it

Good luck for your next exams

 

[Candi00]

Re: Help's here

umm , whats the difference between " shear " and " stretch" and how do you know if its a horizontal shear/stretch or vertical shear/stretch ??
+ do u know any easy method to memorize all the volume and area formulas ?
+ in cumulative frequency qs, when its 1<x<=6 and the cumulative frequency of that interval is 2, do we plot the point (1,2) or (6,2) ??
PLEASE ANSWER ASAP !! i need to pass xD

Go to: http://www.xtremepapers.me/forums/viewtopic.php?f=24&t=6947
And the point you need to plot is (6,2)

Hope that helped !!!

Cheers !!! :good:

thanx alot !!! =D .. really helped on the exam =D !!

 

[haochen]