# 1. Introduction

A tetrahedron is a polyhedron composed of four triangular faces, six straight edges, and four vertex corners. Calculating its surface area can be useful in various fields such as geometry, 3D modeling, and physical sciences. In Python, this calculation can be performed by using the square root function from the math module.

# 2. Problem Statement

Write a Python program to calculate the surface area of a tetrahedron given the length of its edges.

# 3. Solution Steps

1. Import the math module to access the square root function.

2. Define a function that calculates the area of a tetrahedron using the formula: Area = √3 * a², where a is the edge length.

3. Take the length of the edge as input.

4. Call the function and pass the edge length to it.

5. Print the calculated surface area.

# 4. Code Program

``````import math

# Function to calculate the area of a tetrahedron
def area_of_tetrahedron(edge_length):
# Calculate the area using the formula
area = math.sqrt(3) * edge_length ** 2
return area

# Edge length of the tetrahedron
edge = 5

# Calculate the surface area
surface_area = area_of_tetrahedron(edge)

# Print the surface area
print(f"The surface area of a tetrahedron with edge length {edge} is: {surface_area}")
``````

### Output:

```The surface area of a tetrahedron with edge length 5 is: 43.30127018922193
```

### Explanation:

1. math.sqrt is used to calculate the square root of 3.

2. area_of_tetrahedron is a function that takes edge_length as its parameter and uses the given formula to compute the area.

3. edge holds the value of the tetrahedron edge, set to 5 units.

4. surface_area stores the returned value from area_of_tetrahedron.

5. The print statement outputs the surface area, indicating that the surface area of a tetrahedron with an edge length of 5 is approximately 43.301.

6. Backticks highlight math.sqrt, area_of_tetrahedron, edge, and surface_area as code elements within the explanation.