The radius of a sphere shrinks from 10 to 9.8 cm. Find approximately the decrease in its volume.

Explanation

To find the approximate decrease in the volume of a sphere when its radius shrinks from 10 cm to 9.8 cm, we can follow these steps:

### Step 1: Understand the formula for the volume of a sphere
The volume \( V \) of a sphere is given by the formula:
\[ V = \frac{4}{3} \pi r^3 \]
where \( r \) is the radius of the sphere.
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