Question

What is the volume of a cylinder with the following dimensions:

Answer 1

2pi*r^2*h, h=height

Answer 2

that just confused me ._.

Answer 3

are you familiar with the formula for the area of a circle?

Answer 4

\[2\pi(r^2)\]

Answer 5

i don't understand that .

Answer 6

\[V= \pi*(r)^2*l\]

Answer 7

r radius, l - length

Answer 8

then read about it, http://www.mathsisfun.com/geometry/circle-area.html

Answer 9

math has been really confusing for me .

Answer 10

if you go to https://www.khanacademy.org/ make an account and go through their math program i guarantee math will start making sense, but it takes time and serious effort

Answer 11

okay, i'll try it . thank you .

Answer 12

as a rule of thumb for myself, every time i think "this is f****g stupid" it means im about to understand something.

Answer 13

lololol you're funny . thanks for your help and the site to check out . greatly appreciate it .

Answer 14

no problem, feel free to ask me any questions in the future

Answer 15

okay , i sure will . (:

Answer 16

okay , i've got a question ,

Answer 17

yes?

Answer 18

what do they mean by this ? Convert the mixed number, 1 3/4 , to a fraction. Reduce fraction if necessary.

Answer 19

so think of 1 3/4 as "one whole and 3/4 of a whole" one whole in terms of 4 parts is 4/4 so you have 4/4 parts and 3/4 parts making..... total parts

Answer 20

how would i put the problem into my phone , using my calculator on my phone ...

Answer 21

3+4

Answer 22

over 4

Answer 23

thats easy .... i feel stupid.

Answer 24

it's 4/7

Answer 25

7/4

Answer 26

OR 7/4

Answer 27

you want to conceptualize it then you can solve any type of this question they throw at you. think of a fraction as parts of a whole, the upper number (called the numerator) is how many parts you have, and the lower number (called the denominator) is how many parts you need to make a whole. so 1 3/4 is one whole (4/4) and 3/4 of a whole making 3+7 parts out of a whole consisting of 4 parts or 7/4

Answer 28

so doesn't that mean that it's a whole fraction ?

Answer 29

yes, you have more than a whole. Theres usually, almost always, some sort of picture you can use to understand math concepts. For this one i think of pizzas, you basically have a whole pizza and three forths of a pizza

Answer 30

oooohhhh that makes sense to me now ... but just a little . i understand what you're saying i'll just need to practice a little more to fully understand the concept of this.

Answer 31

im sure youll do just fine

Answer 32

i just have no clue how to work my next problem , it's about pi . i haven't really understood it .

Answer 33

Pi is just a number that involves how many times you could wrap the diameter of a circle around the circle its self.

Answer 34

ohh . could you explain more about it to me ?

Answer 35

i couldnt think of anything better than twizzlers as a unit of lenght, but you can use anything, a circle with a diameter of one jellybean, meter, toe nail, skittle, will have a circumfrence of pi jellybeans, meters, or skittles

Answer 36

in math terms this is stated as "The ratio (fraction involving) the diameter and the circumference is equal to pi (3.14159)"

Answer 37

or \[\frac{ C }{ D } = \pi =3.14159....., c= circumfrence, d= diameter\]

Answer 38

https://www.youtube.com/watch?v=wNcFAQHJWAU&noredirect=1