Gahhhhh, Why can't I get theses???
graph:http://imgur.com/epnj7
problem:http://imgur.com/m6qrZ

Ok, So for P in the formula I have:4-x
and for H in the formula I have (1/8)x^2

As you can see, the answer is 16pi/3, I am getting 8pi/3. Am i inputting the wrong stuff into my formula or is it just arithmetic?

I hope it is arithmetic, I have a test tomorrow :(

Question

Gahhhhh, Why can't I get theses??? 
graph:http://imgur.com/epnj7
problem:http://imgur.com/m6qrZ

Ok, So for P in the formula I have:4-x
and for H in the formula I have (1/8)x^2

As you can see, the answer is 16pi/3, I am getting 8pi/3. Am i inputting the wrong stuff into my formula or is it just arithmetic?

I hope it is arithmetic, I have a test tomorrow :(

anonymous · Answer

Kewl

anonymous · Answer

It works.  Did you remember that it's 2*pi*integral?  Sorry if that seems patronising lol.

anonymous · Answer

Darggg!!, forgot the 2! :P thank you so much!