Math 4024 Paper 1

[abcde]

To find the volume you have to multiply the area of segment with the height of cylinder, which is given. (Volume = base area x height) The depth isn't involved again.

 

[abc123]

but what if the its not filled completely? Then we would calculate depth?

 

[no.mercy]

can someone tell me how to solve the first two parts

 

[maestro007]

(a)
(2r)^2=l^2+l^2
4r^2=l^2
L^2=2r^2
l=r√2

 

[abc123]

for part a use phythogoras's theorem:

(l/2)^2 + (l/2)^2=r^2 just solve it further

for part b calculate the perimeter of square using the length shown in part a < cirum of circle that is 2pier and simplify

 

[abc123]

(a)
(2r)^2=l^2+l^2
4r^2=l^2
L^2=2r^2
l=r√2

it can't be 2r^2

 

[maestro007]

Why?

 

[abc123]

I assume that you are taking the height as r too, its wrong because the radius is touching the square not the circle. And your above calculation is wrong

 

[Bloodlines]

YAr its easy.
Firstly check that how many triangles can be formed inside the square\. it would be 4. Now divide 360 by 4 to calculate how much part 0f 360 lies in each triangle. It would be 90
Now apply pythagoras theorem.
L^2=r^2+r^2
L^2=2r^2
L=Underroot 2 and r
Thats the solution for first part :Yahoo!:

 

[ultraviolet]

Hey, do v need to do old pastpapers too, like frm classified or jst 2000 onwards is enf? nd i need help in tht nth term thing plz

 

[abcde]

Hey, do v need to do old pastpapers too, like frm classified or jst 2000 onwards is enf? nd i need help in tht nth term thing plz

Past papers 2002 onwards would be enough, I think to give you practice and an idea of what sort of questions come in papers. For number sequences, refer to this thread: viewtopic.php?f=25&t=4147

 

[maestro007]

I assume that you are taking the height as r too, its wrong because the radius is touching the square not the circle. And your above calculation is wrong

i have taking 2r as the diagonal of the square and the hypotenuse of the triangle. l is the base and the perpendicular.

 

[abc123]

2r cannot be the diagnol of the square

 

[superfly]

hey can someone tell me the formulas that we need to memorise. thats the place where i loose marks. thanku!

 

[no.mercy]

Here you go

 

[RockStar15]

Nobody Answered my question

My question was...Any tips for preparing Maths Paper 1????
We cant use calculator....
Topics that mostly come in paper????

 

[abcde]

Look, ANY topic can come in paper 1! Check the syllabus thoroughly to ensure you are familiar with all of them. Solve a number of basic arithmetic questions (without a calculator) to get practice. Remember to use 'BODMAS' while solving simple arithmetic. Before answering the question, do a rough calculation in mind so that you know that the answer you have later found out is sensible. Estimation/approximation, upper and lower bounds, factorisation, time -involving problems are some typical examples of paper 1 questions.
Best of luck!

 

[RockStar15]

Highly appreciated!! Thx abcde

 

[no.mercy]

@rockstar do transformations, locus and bearing questions..they most of the time come..i recommend you to do topical for them..

 

[Silent Hunter]

^^^no.mercy said correct