1)Draw a line segment of length AB=9.3cm add 1cm more to it and mark it as C.
2.With the help of a compass from point B and radious more than half of the line segment draw an arc on both sides of the line segment.
3.with the same radius and from point A draw an arc cutting the previous drawn arcs and draw a perpendicular bisector on the line segment and mark it as O.
4.Now from O and equal to OA draw a semi circle.
5.Now fom point B draw a perpendicular line cutting the semi circle at D the value of the line drawn will be √9.3