math
posted by kim .
Could someone show me how to solve this problem? I am trying to do it myself.I just want to make sure I am going about it the right way. Thank you.
z=(SQRTx^2+y^2)
(9)^3/2
(8)^2/3

9^(3/2)= 1/(9^3/2)=1/(sqrt 9)^3=1/27