Find the radius of gyration of a hollow uniform sphere of radius `R` about its tangent.

Explanation

To find the radius of gyration of a hollow uniform sphere of radius \( R \) about its tangent, we can follow these steps:

### Step-by-Step Solution:

1. **Understand the Concept of Radius of Gyration**:
The radius of gyration \( k \) is defined as the distance from the axis of rotation at which the total mass of the body can be assumed to be concentrated without changing its moment of inertia.

2. **Identify the Moment of Inertia**:
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