[" Fthe radii of two concentric circles are "4cm" and "5cn],[" one circle which is tangent to the other circle."]

The radii of two concentric circles are 4 cm and 5 cm. The difference in the areas of these two circles is :

If radii of two concentric circles are 4 cm and 5 cm , then length of each chord of one circle which is tangent to the other circle, is

If radii of two concentric circles are 4 cm and 5 cm, then length of each chord of one circle which is tangent to the other circle, is

If the radii of two concentric circles are 5 cm and 13 cm then the length of the chord of one circle which is tangent to the other circle is …..

If the radii of two concentric circles are 4 cm and 5 cm, then find the length of each chord of one circle which is tangent to the other circle.

The radii of two concentric circles are 40 cm and 41 cm What is the length of a chord of the bigger circle which is tangent to the smaller circle?