Question

Radii of two circles are 6.3 cm and 3.6 cm . If they touch each other internally , then the distance between their centers is

Answer 1

IF two circles touch internally, distance bw their centres is  given by,
d=R-r
Therefore distance is 6.3 -3.6 =2.7cms

Answer 2

Distance between the centres = bigger radius - smaller radius D= 6.3-3.6=2.7