sqrt(5)/(sqrt(32)
color(white)("XXX")=sqrt(5)/(sqrt(16) * sqrt(2)
color(white)("XXX")=sqrt(5)/(4sqrt(2))
color(white)("XXX")=sqrt(5)/(4sqrt(2)) xx sqrt(2)/sqrt(2)
color(white)("XXX")=(sqrt(5) * sqrt(2))/(4 * sqrt(2) * sqrt(2))
color(white)("XXX")=sqrt(10)/(4 * 2)
color(white)("XXX")=sqrt(10)/8