Certainly! Let's calculate the area of a circle with a radius of 20 cm, using π (Pi) as 3.14.

Understanding the Formula for Area
The area \( A \) of a circle can be calculated using the formula:
\[ A = \pi r^2 \]
Where:
- \( A \) = Area of the circle
- \( r \) = Radius of the circle
- \( \pi \) = Pi, approximately 3.14

Substituting the Values
Given:
- Radius (\( r \)) = 20 cm
- \( \pi \) = 3.14
Now, substituting the values into the formula:
\[ A = 3.14 \times (20)^2 \]

Calculating the Square of the Radius
First, calculate \( (20)^2 \):
- \( (20)^2 = 400 \)

Final Calculation of Area
Now, substitute \( 400 \) back into the area formula:
\[ A = 3.14 \times 400 \]
Now perform the multiplication:
- \( A = 1256 \, \text{cm}^2 \)

Conclusion
The area of the circle with a radius of 20 cm, using \( \pi = 3.14 \), is:
- **Area = 1256 cm²**
This comprehensive calculation helps in understanding the relationship between the radius and the area of a circle, which is vital in various applications, including UPSC-related problems.