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The length of the radius of a circle with centre O is 5 cm and the length of the chord AB is 8 cm. The distance of the chord AB from the point O is
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- 2 cm.
- 3 cm.
- 4 cm.
- 15 cm.
- 2 cm.
Correct Option: B
On the basis of question we draw a figure of a circle with centre O and radius is 5 cm ,
Here , OA = radius = 5 cm.
OC ⊥ AB
| ∴ AC = CB = | = 4 cm. | |
| 2 |
In right angle ∆ OAC,
OC = √OA² - AC² = √5² - 4²
OC = √25 - 16 = √9 = 3 cm.
