use double integral to prove surface area of right circular cylinder with...

radius a>0 and height h>0 is given by 2piah

Re: use double integral to prove surface area of right circular cylinder with...

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**sluggerbroth** radius a>0 and height h>0 is given by 2piah

Please show us what work you have been able to do for this.

-Dan

Re: use double integral to prove surface area of right circular cylinder with...

i don't do well with proofs and need some direction to start

Re: use double integral to prove surface area of right circular cylinder with...

Area=pi r^(2) and area=2pirh

i am told arc sin x =1/(1-x^(2))^(1/2) might be good to know

Re: use double integral to prove surface area of right circular cylinder with...

A thin "layer" at height z will have surface area [itex]2\pi a dz[/itex]. Integrate that from 0 to h. No, you do not need that equation (which is not true anyway).

I find this very peculiar. You have posted a number of fairly standard Calculus problems but protested that you have no idea how to even begin? Are you not taking a Calculus course? Do you not have a calculus textbook?