Question

Two concentric circles of radii 2cm and 5cm. find the length of the

chord of the larger circles which touches the smaller circle.​

Answer 1

Answer:

the length of chord is 2root 29

Answer 2

ANSWER 4CM

Step-by-step explanation:

let two circles have the same centre O

and AB is chord of largest circle touching smaller circle at c

also OA= 5cm and OC = 3cm

In ️ OAC,

OA² = OC² + AC²

THEREFORE, AC² = OA² - OC²

AC² = 3² - 5²

AC² = 9 - 25

AC² = 16

AC = 4cm

The length of the chord of the larger circle which touches the smaller circle is 4 cm .