From a uniform circular disc of diameter `d,a` circular disc of diameter `d//6` and having centre at a distance `d//4` from the centre of the disc is scooped out. Determine the centre of mass of remaining portion.

Explanation

To determine the center of mass of the remaining portion of a uniform circular disc after scooping out a smaller disc, we can follow these steps:

### Step 1: Define the Parameters
- Let the diameter of the larger disc be \( d \). Therefore, its radius \( R \) is given by:
\[ R = \frac{d}{2} \]
- The diameter of the smaller disc being scooped out is \( \frac{d}{6} \), which means its radius \( r_s \) is:
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