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## Homework Statement

a solid in the first octant is bounded by the planes y=0 and z=0 and by the surfaces z=4-x^2 and x=y^2. its density function =kxy, k is a constant. find the mass of the solid and the center of mass

## Homework Equations

My= double integral of D[x*kxy]dA

Mx=double integral of D[y*kxy]dA

M= double integral of D[kxy]dA

xbar=My/M

ybar=Mx/m

## The Attempt at a Solution

this problem is way to complicated for me and I have a test on it this Thursday. Please guide me through the steps. What is the region D. What is dA. and do I even have the equations right or is the should I be using xbar=Myz/M, ybar=Mxz/M, and zbar=Mxy/M. Please explain how to solve these type problems. I need help!!