Radius
The radius of a circle is just half its diameter; in other words, it is a straight line drawn from the centre to the circumference. See CIRCLE.
Twelve hundred entries from the golden age of cast metal — how bells are founded, why brass is not bronze, what a cupola melts and a core withstands — by Simpson Bolland, the trade's great teacher.
The radius of a circle is just half its diameter; in other words, it is a straight line drawn from the centre to the circumference. See CIRCLE.