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

Answer 1

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

Answer 2

@NotTim

Answer 3

i have no idea sorry

Answer 4

@Opcode

Answer 5

@jim_thompson5910
Is your best bet...

Answer 6

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

Answer 7

@Hero Maybe?

Answer 8

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

Answer 9

. . . OMG THERE IS A TYPO IN MY TEXTBOOK

Answer 10

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