A little math problem

[Nicki]

I need to find the area of this part of a circle, but I forgot how you do. So you could anyone help me?

[N5]

does it give you any measurements? any percentages or anything?

also, which part? lol

[Deza]

we need some measurements and which part top or bottom?

[Nicki]

I just need the formula And it shouldn't be necessary to know the measurements if you know the formula

[FUBAR]

ARGH, I think i used to know how to do this. >_>

I'll post again if I remember or anything.

[Nicki]

Cool, thanks

[Jackson]

Argh, I knew how to do this in school but I've forgotten it now

I know the area of a circle is "Pie r squared" lol

[Nicki]

Wow, great help Can you also tell me other things I learned in 3rd grade? XD
Nah, it's cool, I don't mind Btw, pie is something you eat, pi is a greek letter

[Jackson]

If you give the exact question with all the calculations and stuff it'll be a lot easier because then everyone will know what kinda equation they're looking for.

[CkChRIzZ]

A=(pi)r[squared]
or A=1/2(d)[squared]
whether you have the diameter or the radius.

[Nicki]

Well, there's no real question, it was just something my dad asked me to do, cause he just bought this huge cylinderic water tank for his firm, and they want to add little lines on the outside so they can see how many litres there's in the tank when the water level reaches each line.



The diameter of the cylinder is 1,2 m, the length of it is 2,1 m and the volume is 2380 litres (these are just approx. values, I think 1,2^2*pi*2,1 is 2375 ). I just need to how long a line from the bottom of the circle to the middle of each line on the drawing needs to be

Originally Posted by CkChRIzZ

A=(pi)r[squared]
or A=1/2(d)[squared]
whether you have the diameter or the radius.

Thanks for reading and understanding my question, dumbass XD

Vichter sent me the right formula over PM
is what I needed
Cool site, actually: Area of a circle segment - Math Open Reference

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