🚀 Day 20/150 – Area of a Triangle in Python

Calculating the area of a triangle is a classic beginner-friendly problem that helps you understand formulas, user input, and different coding styles in Python.

The most common formula is:

$$\text{Area} = \frac{1}{2} \times \text{base} \times \text{height}$$

Let’s explore multiple ways to implement this 👇

🔹 Method 1 – Basic Method (Direct Calculation)

base = 10 height = 5 area = 0.5 * base * height print("Area of triangle:", area)

🧠 Explanation:

• We directly assign values to base and height.
• 0.5 * base * height calculates the area.
• Simple and easy to understand.

👉 Best for: Quick calculations and beginners.

🔹 Method 2 – Taking User Input

base = float(input("Enter base: ")) height = float(input("Enter height: ")) area = 0.5 * base * height print("Area of triangle:", area)

🧠 Explanation:

• input() allows user interaction.
• float() converts input into numbers.
• Same formula is applied afterward.

👉 Best for: Dynamic, real-world scenarios.

🔹 Method 3 – Using a Function

def triangle_area(b, h): return 0.5 * b * h print(triangle_area(10, 5))

🧠 Explanation:

• Function triangle_area() takes b and h as parameters.
• return gives back the computed value.
• Makes code reusable and clean.

👉 Best for: Structured and reusable programs.

🔹 Method 4 – Using Lambda Function

area = lambda b, h: 0.5 * b * h print(area(10, 5))

🧠 Explanation:

• lambda is a short, one-line function.
• Useful for simple operations without defining a full function.

👉 Best for: Short and quick logic.