Use the sliders to describe the Gateway arch as good as possible.

Here is some information about this Memorial in Missouri:[br]The [b]Gateway Arch[/b], known as the "Gateway to the West", is the tallest structure in Missouri. It was designed [color=#000000]by [/color][color=#000000]Finnish-American [/color][color=#000000]architect [/color][color=#000000]Eero Saarinen[/color][color=#000000] and structural engineer [/color][color=#000000]Hannskarl Bandel[/color] in 1947 and built between 1963 and October 1965. It stands 630 feet (192 m) tall and 630 feet (192 m) wide at its base. [wikipedia][br][br]Use this Information to find a quadratic function that describes the shape of the memorial.