A sphere of radius `100mm` shrinks to radius 98mm, then the approximate decrease in its volume is (a)`12000pim m^3` (b) `80000 pim m^3` (C) `8000pim m^3` (d) `120pim m^3`

Explanation

To find the approximate decrease in the volume of a sphere when its radius changes, we can use the formula for the volume of a sphere and apply the concept of differentials.

### Step-by-Step Solution:

1. **Identify the volume formula**:
The volume \( V \) of a sphere with radius \( r \) is given by:
\[
V = \frac{4}{3} \pi r^3
...