The Science of the Shulba: A Study in Early Hindu Geometry c20.s5.21

The Science of the Śulba: A Study in Early Hindu Geometry c20.s5.21

Hence the side of the equivalent square is nearly $a + r/(2a+1) + (r/(2a+1)(1 - r/(2a+1)))/(2(a + r/(2a+1))).$