(i) Draw a line segment AB = 8.6 cm.
(ii) Draw a circle with centre A with radius 1/2 AB on upper and lower side of AB.
Similarly,
Draw a circle with centre B with radius 1/2 AB on upper and lower side of AB which intersect above a circle at M and N respectively.
(iii) Draw line segment MN which intersect AB at point O.
On measuring,
AO = BO = 1/2
AB = 4.3