Find the length of a chord which is at a distance of 4 cm from the centre of the circle of radius 6 cm.

Explanation

To find the length of a chord that is at a distance of 4 cm from the center of a circle with a radius of 6 cm, we can follow these steps:

### Step 1: Understand the Geometry
We have a circle with center O and a radius of 6 cm. The chord AB is at a perpendicular distance of 4 cm from the center O. We denote the point where the perpendicular from O meets the chord as L.

### Step 2: Set Up the Right Triangle
In triangle OAL:
- OA is the radius of the circle = 6 cm (hypotenuse).
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