Two circles of radii 8 cm and 18 cm touch externally . Find the length of a directcommon tangent to the the two circles. Share with your friends Share 0 Varun.Rawat answered this Radius of first circle, r1 = 18 cmRadius of second circle, r2 = 8 cmAs both the circles touch externally, thendistance between their centres, d = r1+r2 = 18+8 = 26 cmNow, length of direct common tangent = d2-r1-r22 = 262-18-82 = 676-100 = 576 = 24 cm 4 View Full Answer
