Copy of 3D Printing: Square Cross Sections Between Parabolas

My next 3D printing project will drive my next Calculus unit. [br]Build square cross sections on the region bound by [math]y=ln\left(x+3\right)[/math] and [math]y=x^4+2x^3[/math].
– ssoule, Steve Phelps

Information: Copy of 3D Printing: Square Cross Sections Between Parabolas