10//> val res4: Int = 10
10*1.4
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()
setSpeed(fast)
setBackground(blue)
setPenColor(red)
setPenThickness(10)
forward(20)
setPenThickness(14.0)
forward(20)
setPenThickness(19.59)
forward(20)
setPenThickness(27.439)
forward(20)
setPenThickness(38.4159)
forward(20)
setPenThickness(53.7823)
forward(20)