Plotting help intersection 3 surfaces

Question:Plotting help intersection 3 surfaces

Posted: hitstudent 50 Product: Maple

November 30 2016

Given 3 surfaces:

x^2+y^2=1 , z=0 (the xy base plane) and z=1-x^2

To plot these I suggested to use cylindrical coordiates knowing x=r*cos(t) and y=r*sin(t)

Which leads to z=1-r^2*cos^2(t)

However i got problems knowing how to plot this object and dearly ask for help.

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