set terminal png
set output "gnuplot06a.png"
	unset border
    set  nogrid
    set samples 100000
            set lmargin at screen 0
		set rmargin at screen 1
		set bmargin at screen 0
		set tmargin at screen 1
	set yrange [-1:9]
	set xrange [-10:10]
	set size 5/5.
	set key center top reverse Left
	set xzeroaxis
	set yzeroaxis
	set xtics axis out scale 0.5
	set ytics axis
	plot(sqrt(64-x**2)) lt rgb "#CBAA00" lw 2 notitle