(adsbygoogle = window.adsbygoogle || []).push({}); 1. The problem statement, all variables and given/known data

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

2. Relevant equations

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

3. 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 text book says the answer should be [tex]\frac{128\pi}{5}[/tex]

**Physics Forums | Science Articles, Homework Help, Discussion**

Dismiss Notice

Join Physics Forums Today!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

# Homework Help: Using disk method with respect to y-axis

**Physics Forums | Science Articles, Homework Help, Discussion**