An oil drop of radius `0.10mm` spreads on a circular film of diameter 20 cm. Calculate the molecules size of the oil drop on the film.

Explanation

To solve the problem of calculating the size of the oil molecules from the given data, we will follow these steps:

### Step 1: Convert the given measurements to consistent units.
- The radius of the oil drop is given as \(0.10 \, \text{mm}\). We convert this to meters:
\[ r = 0.10 \, \text{mm} = 0.10 \times 10^{-3} \, \text{m} = 1.0 \times 10^{-4} \, \text{m} \]
- The diameter of the circular film is given as \(20 \, \text{cm}\). We convert this to meters:
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