-
If two concentric circles are of radii 5 cm and 3 cm, then the length of the chord of the larger circle which touches the smaller circle is
-
- 6 cm
- 7 cm
- 10 cm
- 8 cm
- 6 cm
Correct Option: D
As per the given in question , we draw a figure a circle,
Given , OC = 3 cm
OA = 5 cm
AC = √OA² - OC²
AC = √5² - 3² = 4
∴ AB = 2AC = 8 cm
