Mathematics: Post your doubts here!

[Di$$ha]

thanks and same to u !! :*

 

[Fayax555]

Hi suri003, if you have any doubt in maths, you can ask here.
And maths isn't a difficult subject.

 

[suri003]

it tricky though .... i lll surely ask : ty

Hi suri003, if you have any doubt in maths, you can ask here.
And maths isn't a difficult subject.

 

[Fayax555]

it tricky though .... i lll surely ask : ty

Yeah, extended papers are tricky, but easy I guess.

 

[suri003]

d paper 4 is toooooooo lengthyyyyy.... ahnd pains as well i feeel sleeepy

 

[snailey]

Note: There may be different methods to do this question.
Imagine that the circular pool is a cylinder.
In this question it is asked we should write in 'cm'.
So lets change the other units in to cm.
12Litres = 12000cm^3 (volumes are always in cubic units)
5millimetres=0.5cm
When 12000cm^3 of water(volume) is emptied to the pool, the water level rises by 0.5cm(height).
Formula for finding volume of a cylinder is
π x r^2 x h = Volume
We know the values of 'h' and 'V'. radius is what we need.
π x r^2 x 0.5 = 12000
r^2 = 12000/(π x 0.5)
r = square root of [12000/(π x 0.5)]
= 87.40387
=87 cm (correct to nearest cm)
Remember you should write the answer correct nearest 'cm' or you may lose marks. Because it is given in the question.
If you have any doubts you can ask me or you can ask ***amd***.

Thanks, I understood how to do it
It seems easy to do but the only problem I may face is conversions.
My igcse math is on 5th nov (paper2) and 8th nov (paper 4).

 

[TheOnlyOne]

If aybody needs help in math extended they can email me at [email protected] i am pretty good in math and science i got high A* in them

 

[Di$$ha]

snailey I too belong to India ... I have my igcse maths xam on 5th and 7th ..

 

[suri003]

sa,

snailey I too belong to India ... I have my igcse maths xam on 5th and 7th ..

same here !!1!!

 

[Di$$ha]

yup suri003 .. i do remembr!

 

[TheOnlyOne]

Which part of india ?

 

[Di$$ha]

Which part of india ?

Mumbai, Maharashtra

 

[TheOnlyOne]

Bangalore,Karnataka !!

 

[Sudhanshu]

Math Question Simple it is ?
Prashant of height 1.2m is going away from the lamp post at speed of 1.5m/s.
If the lamp post is 3.9 m above the ground then the length of his shadow after 3 seconds is ??????

 

[Di$$ha]

Math Question Simple it is ?
Prashant of height 1.2m is going away from the lamp post at speed of 1.5m/s.
If the lamp post is 3.9 m above the ground then the length of his shadow after 3 seconds is ??????

idk ..

 

[Kdown567]

Math Question Simple it is ?
Prashant of height 1.2m is going away from the lamp post at speed of 1.5m/s.
If the lamp post is 3.9 m above the ground then the length of his shadow after 3 seconds is ??????

Light comes from top of lamp in theory so ...

 

[snailey]

snailey I too belong to India ... I have my igcse maths xam on 5th and 7th ..

Haha! My mistake ..mine is on 5th n 7th too XD
And I'm from Mumbai too!
Btw which school?

 

[Di$$ha]

trinity international school !

 

[snailey]

trinity international school !

Cool XD

 

[snailey]

Hi suri003, if you have any doubt in maths, you can ask here.
And maths isn't a difficult subject.

Can someone help me with this easy yet confusing questn?

A man spends 1/3 of his salary on housing and 2/5 of the remaining on food. What fraction is left for other purposes?