In Figure, there are two concentric circles with centre `O` of radii `5c ma n d3c m` . From an external point `P ,` tangents `P Aa n dP B` are drawn to these circles. If `A P=12 c m ,` find the length of `B Pdot`

Explanation

To solve the problem step by step, we will use the properties of tangents and the Pythagorean theorem.

### Step 1: Identify the given information
- The radius of the larger circle (OA) = 5 cm
- The radius of the smaller circle (OB) = 3 cm
- The length of the tangent from point P to point A (AP) = 12 cm

### Step 2: Use the Pythagorean theorem for triangle OAP
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