A cone is sliced by a plane. The plane intersects the vertex of the cone and includes a chord on the base of the cone that is not a diameter. What is the most precise name of the shape of the cross section created by the slice?

Marquise has 200 meters of fencing to build a rectangular garden. the garden's area (in square meters) as a function of the garden's width w w (in meters) is modeled by: a ( w ) = − w 2 + 1 0 0 w a(w)=−w 2 +100w what side width will produce the maximum garden area? meters