Friday

November 28, 2014

November 28, 2014

Posted by **Cara** on Tuesday, July 9, 2013 at 9:49pm.

I keep getting (1/3)pi and can't figure out what I'm doing wrong!

- MATH -
**Reiny**, Tuesday, July 9, 2013 at 11:57pmrotating about the y -axis needs

V = π∫x^2 dy

first equation:

y = x^2

2nd equation:

√x = y

x = y^2

x^2 = y^4

so V = π∫y dy - π∫y^4 dy

= π [ (1/2)y^2 - (1/5)y^5] from y = 0 to 1

= π( 1/2 - 1/5)

= (3/10)π

**Answer this Question**

**Related Questions**

Calculus - This problem set is ridiculously hard. I know how to find the volume ...

Calculus AB - Consider the region trapped between the graphs of y=9-x^2 and y=11...

Calculus AB - Consider the region trapped between the graphs of y=9-x^2 and y=11...

Calculus AB - Consider the region bounded by the graphs of the equations x=y^2 ...

calculus - Let A be the bounded region enclosed by the graphs of f(x) = x , g(x...

Calculus - Find the volume of the solid obtained by rotating the region enclosed...

calculus - Consider the solid obtained by rotating the region bounded by the ...

Calculus - Find the volume of the solid obtained by rotating the region enclosed...

calculus - Sketch the region bounded by the curves y = x^2, y = x^4. 1) Find ...

MATH HELP - Find the volume of the solid obtained by rotating the region ...