You are Here: Home >< Maths

1. what's up guys
im kinda stuck on this question i don't really understand it and in the answer what is even h stand for and what is 2pierh is for pleaaaase help and explain it to me
thanx people
and bless
Attached Images

2. ...What?

Ah, I see. The question wasn't there when I looked.
3. h is the height of the cylinder
4. h - height
2 pi r h = 2 x pi x radius x height = surface area of cylinder
5. (Original post by icapturethecastle)
h - height
2 pi r h = 2 x pi x radius x height = surface area of cylinder
oh thanx also why do you times it by 2 theres only 1 circumfrence on the cylender right?
but i get the rest like 2pie r 2 because theres 2 circles in the cylender but just the 2 pie r h why isit timesed by 2
thanx for making it clearer
6. (Original post by ketchup)
oh thanx also why do you times it by 2 theres only 1 circumfrence on the cylender right?
but i get the rest like 2pie r 2 because theres 2 circles in the cylender but just the 2 pie r h why isit timesed by 2
thanx for making it clearer
it's just the formula for working out what the surface area is of the cylinder, 2rh gives you its surface area... you just plug in the height and radius...
7. (Original post by icapturethecastle)
it's just the formula for working out what the surface area is of the cylinder, 2rh gives you its surface area... you just plug in the height and radius...
thanx sooo much

### Related university courses

TSR Support Team

We have a brilliant team of more than 60 Support Team members looking after discussions on The Student Room, helping to make it a fun, safe and useful place to hang out.

This forum is supported by:
Updated: April 6, 2011
Today on TSR

### My dream is to become a WAG

I wont settle for anything else!

Poll
Useful resources

### Maths Forum posting guidelines

Not sure where to post? Read the updated guidelines here

### How to use LaTex

Writing equations the easy way

### Study habits of A* students

Top tips from students who have already aced their exams