10
10*1.4//> val res4: Double
10*1.4*1.4
10*1.4*1.4*1.4
10*1.4*1.4*1.4*1.4
10*1.4*1.4*1.4*1.4*1.4
clear()
setBackground(blue)
setPenThickness(10)
forward(20)
setPenThickness(14.0)
forward(20)
setPenThickness(19.6)
forward(20)
setPenThickness(27.4)
forward(20)
setPenThickness(38.4)
forward(20)
setPenThickness(53.7)
forward(20)