Question

two concentric circles radii are 25cm and 24cm if chord touches the smaller circle and inside of outer circle then find the length of the chord​

Answer 1

Answer:

Let O be the centre of concentric circles and APB be the chord of length 24 cm, of the larger circle touching the smaller circle at P.

Then, OP⊥AB and P is the mid-point of AB.

∴AP=PB=12 cm

In △OPA, we have

OA

2

=OP

2

+AP

2

[by pythagorus theorem]

⇒OA

2

=5

2

+12

2

=169

⇒OA=13 cm

Hence, the radius of the smaller circle is 13 cm.

Answer 2

Answer:

chord ab = 2 cm

Step-by-step explanation:

hope it is helpful to you