I have two problems I need help with 1. The problem statement, all variables and given/known data https://ccle.ucla.edu/mod/resource/view.php?id=801511 https://ccle.ucla.edu/mod/resource/view.php?id=778704 2,3. Answers and work are given In the surface integral problem, I do not understand how it sets it up for Method 1. (How does it go from integral of x2+y2 to 2/3 integral of x2+y2+z2 For the "estimate the integral" problem, I do not understand why e(sinx cosx sinz) is considered a constant function. Also, any cramming advice for passing a computation multivariable calc test would be appreciated.