Question

4. Two concentric circles are of radii 5 cm and 3 cm. Find the length of the chord of the
larger circle (in cm) which touches the smaller circle.
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Answer 1

Step-by-step explanation:

ab is length of chord

in triangle ABC

ac2=ab2 + bc2

5)2 = ab2 +3)2

25= ab +9

ab =4 cm