find the volume of the solid generated by rotating
y=(x^2)/4
x=2
y=0
about the y axis
I am suppose to use disc method

Question

find the volume of the solid generated by rotating
y=(x^2)/4
x=2
y=0
about the y axis
I am suppose to use disc method

anonymous · Answer

I built the following integral
$$V=\Pi \int\limits_{0}^{1}2-2\sqrt{y}dy$$
but I think that I might have done it wrong

anonymous · Answer

@NotTim

nottim · Answer

i have no idea sorry

anonymous · Answer

@Opcode

opcode · Answer

@jim_thompson5910 
Is your best bet...

anonymous · Answer

I am his fan I asked him if he had a chance to help me and he signed off without responding

opcode · Answer

@Hero Maybe?

hba · Answer

V=pi r^2 h

y=x^2/4 

x^2=4y

x=2sqrt{y}  


x= and x=2sqrt{y}

r=2-2sqrt{y}

V=pi*r^2*h

Take the integral of pi*(2-2sqrt{y})^2*dy

anonymous · Answer

. . . OMG THERE IS A TYPO IN MY TEXTBOOK

anonymous · Answer

where I am taking the formula from does not square the funtion . . . so much time wasted