Question

radii of two concentric circle are 5cm and x cm if x is radius of smaller circle and length of each chord of one circle which is tangent to other is 6 cm find x​

Answer 1

Answer:

Let radius of the smaller circle =OC=r=5 cm.

And radius of bigger circle =OA=R=13 cm.

Now in the smaller circle OC=OP=5 cm.

Since AB is the chord of the bigger circle, it is tangent to the smaller circle.

OP ⊥AB or ∠OPA=90

∘

Now in ΔOAP,

OA

2

=OP

2

+AP

2

⇒13

2

=5

2

+AP

2

⇒AP

2

=144⇒AP=12cm

∴AB=2AP=2×12=24cm. pls mark me brainliest

Answer 2

Answer:

Mark me as brainliest..........