[" 36.The radit of two concentric circles are "],[13cm" and "8cm" .AB is a diameter of the "],[" bigger circle."BD" is a tangent to the smaller "38" ."],[" circle touching it at "D" .Find the length AD."]

The radii of two concentric circles are 13 cm and 8 cm. AB is a diameter of the bigger circle. BD is a tangent to the smaller circle touching it at D. Find AD.

The radii of two concentric circles are 13 cm and 8 cm. AB is a diameter of the bigger circle. BD is a tangent to the smallest circle touching it at D. Find the length AD.

The radii of two concentric circle are 13 cm and 8 cm. AB is a diameter of the bigger circle and BD is a tangent to the smaller circle touching it at D and the bigger circle at E. Point A is joined to D. Find the length of AD.

The radii of two concentric circles are 13 cm ad 8 cm. AB is a diameter of the bigger circle and BD is a tangent to the smaller circle touching it at D and the bigger circle at E. Point A is joined to D. The length of AD (in cm) is___

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?

The radii of two co-centric circles are 13 cm and 8 cm respectively. AB is diameter of outer circle and BE is tangent to the inner circles which touches the inner circle at point D. Then find the length of AD.