Sec.+7.2+Day+2

11. y= √x y=0 x=4 C. about x=4 R= 4-y^2 v= π∫ [0,2] (4-y^2)^2 dy v= 17.067π units cubed

D. about x=6 R=6-y^2 r= 2 v=π∫ [0,2] (6-y^2)^2-4 dy v= 38.4π units cubed

11 cd worked and checked -Heather Henry

11) done by Kristin Peters

13. done by Kamryn Richard

i agree with Kamryn - Daniel Lee

16.) -kathy oh correct. check by matt lee.

Checked by max bredthauer. It's correct
 * 1) 17 done by: Frances Dannenbrink


 * 1) 18 Worked by Andy Humphrey

done by Brooke Wiggins 21. Worked by: Becca Jones

46. In order from least to greatest: 1) Y-Axis 2) X=8 3) X-axis The Y axis revolution has the largest hole in its graph whIle the x axis graph has no hole. Also, when finding the radius on the X=8, you would have to subtrfrom the equation of the line from 8 making it smaller than simply the equation of the line (radius from the X axis revolution) -Worked by Mason Hurtte

47) -Worked by Sarah Slack
 * 1) 47 checked by Maggie McClurkin-correct!


 * 1) 15 worked by Valerie finstad