integration, calculating surface where f(x):y^2 = ....

Hi, I have two functions

**f(x): y^2 = 2x + 4**

g(x): y = x^2

Now, I need to calculate the surface using those 2 functions.

I know if **f(x)** were **y = 2x + 4**, you would simply do **h(x) = f(x) - g(x) **and then integrate it from/to the intersecting points

But thanks to **f(x)** being a function using **y^2**, I am completely lost.

Thanks a lot in advance for helping!

Re: integration, calculating surface where f(x):y^2 = ....

$\displaystyle y^2=2x+4$

$\displaystyle \mid y\mid=\sqrt{2x+4}$

and this can be result in two functions

$\displaystyle y=\sqrt{2x+4}\;\;\;\;y^*=-\sqrt{2x+4}$

now u have three functions, can you continue?

Re: integration, calculating surface where f(x):y^2 = ....