Evaluate $\displaystyle \int\int\int_ExydV$ where E is bounded by $\displaystyle x=y^2, y=x^2, z=0, z=6x+y $

My first try:

$\displaystyle \int\int_D(\int_0^{6x+y}xydz)dA $

$\displaystyle =\int_0^1\int_{x^2}^{\sqrt{x}}(6x^2y+6xy^2)dydx $

ended up with 9/14 which was incorrect.