Question

two concentric circles having centre O ,AB. is chord of larger circle which touches smaller circle at D,if radius of larger circle is 5cm and D is the mid point of AB, if AB=6cm.find radius of smaller circle​

Answer 1

Answer:

The radius of smaller circle is 4cm.

Step-by-step explanation:

By Pythagoras theorem

OD^2=OA^2-AD^2

SO IT IS 5 SQUARE-3 SQUARE

25-9=16

OD=√16=4cm.

hope this helps you.