Question

Two concentric circles are of radii 10 cm and 8 cm are p.M. You are tangents to the two circles from earth if the length of ap is 24 then find the length of rq

Answer 1

hope this answer will help you.

Answer 2

Step-by-step explanation:

hello users 

solution

In triangle OAD and OBD

OA = OB = 10 cm (Radius of larger circle)

And

OD = 6 cm ( Radius of smaller circle)

And

AD and BD are the length of tangents

And

AB = length of chord of larger circle 

Here

Using Pythagoras theorem 

H² = B² + P² 

Here

AD = BD =√ (OA² - OD²)  = √ (OB² -  OD² )

=> AD = √ (10² - 6²)  

= √ (100 - 36)

= √ 64 

= 8 cm 

=> AD = BD = 8 cm 

Hence 

the length of chord = AB

= AD + BD 

= 8 cm + 8 cm

= 16 cm Answer

# hope it helps :)