- #1

Geekchick

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## Homework Statement

y=[tex]\sqrt{x}[/tex], x=4, y=0

## Homework Equations

[tex]\pi[/tex][tex]\int^{c}_{d}{R(y)}^{2}[/tex]dy

## The Attempt at a Solution

I solve for x then pluged it into the formula

[tex]\int[/tex][tex]^{2}_{0}[/tex]{(y[tex]^{2}[/tex])[tex]^{2}[/tex]}

The answer I got was [tex]\frac{32\pi}{5}[/tex]

but my textbook says the answer should be [tex]\frac{128\pi}{5}[/tex]

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