C1 and C2 are two concentric circles such that the radius of C2 is less than the radius of C1. If AB is the chord of C1 of length 12cm, touching C2 at P, find the length of AP.

Two concentric circles have radii of 10 cm and 26 cm. Find the length of the chord of the larger circle that is tangent to the smaller circle.​

If the radius  of two circles are 4.5 cm and 3.5 cm and the length of the transverse common tangent is 6 cm, then the distance between the two centers will be:

Two concentric circles form a circular path. The inner and outer circumference of the path are $$56\frac{4}{7}$$ m and $$94\frac{2}{7}$$ m respectively. Find the width of the path.​