math help

[kuhliloach]

in a detailed description can someone please explain how to find the volume of a cone?

thank you.

[SchizotypalVamp]

geometry or calculus? Do you need a proof or just the formula? You can get both by googling, actually...but I'll be happ to help you out

[kuhliloach]

geometry, i know what the the letters and numbers mean in the formula it's just their order and what you do with them confuses me.

[kuhliloach]

i'm not trying to rush you but i thought i heard you say you could help. if you didn't that's fine, i can look somewhere else.

[leocom2000]

The volume of a cone is 1/3(Area of Base)(height) = 1/3 P r*r h

r-radius of the base (circle)
h-height of the cone
P- Pi ~3.1415

[SchizotypalVamp]

Sorry, I was doing something else. Lemme look it up in my geometry book, it has been a little while.

[kuhliloach]

The volume of a cone is 1/3(Area of Base)(height) = 1/3 P r*r h

r-radius of the base (circle)
h-height of the cone
P- Pi ~3.1415
so 1/3 of pi x r x r x h is the height and and the base is 1/3 of the circles area and then multiply the results?

[kuhliloach]

Sorry, I was doing something else. Lemme look it up in my geometry book, it has been a little while.

if i was disrupting something important this can wait.

[SchizotypalVamp]

Just multiply pi, the squared radius(r x r), the height, and 1/3 together. You don't have to worry about the order, one of the nice things about multiplication. I thought you were asking for a proof, lol. I like calc proofs so much better than geometric. And the calc proof is so much simpler.

[kuhliloach]

Just multiply pi, the squared radius(r x r), the height, and 1/3 together. You don't have to worry about the order, one of the nice things about multiplication. I thought you were asking for a proof, lol. I like calc proofs so much better than geometric. And the calc proof is so much simpler.

1/3 of what or is it it's own number?

[leocom2000]

:clap:

What grade are you in?

[SchizotypalVamp]

its own number.

[kuhliloach]

so i can turn it into a number like 33 or just 3 to represent 1/3 or would i turn the rest into fractions too?

[leocom2000]

For an approximate number you can turn 1/3 into 0.3333.

[leocom2000]

Volume=0.3333*3.1415*r*r*h

[SchizotypalVamp]

piRRh/3
Basically, you multiply together piRRh and a third of that quantity is the right answer. It doesn't matter whether you multiply by 1/3, divide by three, or multiply by .3333333333....., you are doing the same thing. Though, do one of the first two, cause on a calc it will give you the most accurate answer.

[kuhliloach]

For an approximate number you can turn 1/3 into 0.3333.

pi x the height x the radius squared X .33 will get the full answer?


sorry if i didn't answer your earlier question i just don't like posting info like that on public forums.

[SchizotypalVamp]

A quick way to enter it into your calc:

pi x the radius x the radius x the height / 3

hitting the buttons in that order will get you the right answer.

[kuhliloach]

A quick way to enter it into your calc:

pi x the radius x the radius x the height / 3

hitting the buttons in that order will get you the right answer.

/3=1/3?

[kuhliloach]

i gotta go for now, thanks for you guys putting up with me.

[SchizotypalVamp]

yes it is

remember that anything multiplied by one does not change.

[BigFishKeeper]

What grade are you in and waht school you go to?

[kuhliloach]

i just don't like posting info like that on public forums.

i've answered that question already.