Turn on thread page Beta
    • Thread Starter
    Offline

    0
    ReputationRep:
    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
     
    Offline

    0
    ReputationRep:
    ...What?

    Ah, I see. The question wasn't there when I looked.
    Offline

    14
    ReputationRep:
    h is the height of the cylinder
    Offline

    15
    ReputationRep:
    h - height
    2 pi r h = 2 x pi x radius x height = surface area of cylinder
    • Thread Starter
    Offline

    0
    ReputationRep:
    (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
    Offline

    15
    ReputationRep:
    (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, 2\pirh gives you its surface area... you just plug in the height and radius...
    • Thread Starter
    Offline

    0
    ReputationRep:
    (Original post by icapturethecastle)
    it's just the formula for working out what the surface area is of the cylinder, 2\pirh gives you its surface area... you just plug in the height and radius...
    thanx sooo much
 
 
 
Reply
Submit reply
Turn on thread page Beta
Updated: April 6, 2011
Poll
Could you cope without Wifi?
Useful resources

Make your revision easier

Maths

Maths Forum posting guidelines

Not sure where to post? Read the updated guidelines here

Equations

How to use LaTex

Writing equations the easy way

Student revising

Study habits of A* students

Top tips from students who have already aced their exams

Study Planner

Create your own Study Planner

Never miss a deadline again

Polling station sign

Thinking about a maths degree?

Chat with other maths applicants

Can you help? Study help unanswered threads

Groups associated with this forum:

View associated groups

The Student Room, Get Revising and Marked by Teachers are trading names of The Student Room Group Ltd.

Register Number: 04666380 (England and Wales), VAT No. 806 8067 22 Registered Office: International House, Queens Road, Brighton, BN1 3XE

Write a reply...
Reply
Hide
Reputation gems: You get these gems as you gain rep from other members for making good contributions and giving helpful advice.