<h4 id="heading-example">Example</h4>
<pre><code class="lang-plaintext">Input 
enter the radius of the circle 5
Output 
The diameter of the circle is : 10 
The circumference of the circle is: 31.4
</code></pre>
<h4 id="heading-required-to-know">Required to Know</h4>
<p>Use of <strong>Variables</strong>, Use of different operators like <strong>assignment or arithmetic operators</strong>, Use of functions like <strong>print(), and input(), and</strong> Use of <strong>Data types..</strong></p>
<h4 id="heading-formula">Formula</h4>
<pre><code class="lang-plaintext">diameter of the circle = radius of the circle * 2 
circumference of the circle = 2 * 3.14 * radius of the circle
</code></pre>
<h4 id="heading-steps">Steps</h4>
<ul>
<li><p>Take the radius as input from the circle.</p>
</li>
<li><p>Use the formula to find the Diameter and circumference of the circle.</p>
</li>
<li><p>Print the value of the Diameter and circumference of the circle.</p>
</li>
</ul>
<h4 id="heading-program">Program</h4>
<pre><code class="lang-python"><span class="hljs-comment"># Get the radius of the circle from the user</span>
radius = float(input(<span class="hljs-string">"Enter the radius of the circle: "</span>))
<span class="hljs-comment"># Calculate the diameter of the circle</span>
diameter = <span class="hljs-number">2</span> * radius
<span class="hljs-comment"># Calculate the circumference of the circle</span>
circumference = <span class="hljs-number">2</span> * <span class="hljs-number">3.14</span> * radius
<span class="hljs-comment"># Print the diameter and circumference of the circle</span>
print(<span class="hljs-string">"The diameter of the circle is: "</span>, diameter)
print(<span class="hljs-string">"The circumference of the circle is: "</span>, circumference)
</code></pre>


#### Example

```plaintext
Input 
enter the radius of the circle 5
Output 
The diameter of the circle is : 10 
The circumference of the circle is: 31.4
```

#### Required to Know

Use of **Variables**, Use of different operators like **assignment or arithmetic operators**, Use of functions like **print(), and input(), and** Use of **Data types..**

#### Formula

```plaintext
diameter of the circle = radius of the circle * 2 
circumference of the circle = 2 * 3.14 * radius of the circle
```

#### Steps

* Take the radius as input from the circle.
    
* Use the formula to find the Diameter and circumference of the circle.
    
* Print the value of the Diameter and circumference of the circle.
    

#### Program

```python
# Get the radius of the circle from the user
radius = float(input("Enter the radius of the circle: "))
# Calculate the diameter of the circle
diameter = 2 * radius
# Calculate the circumference of the circle
circumference = 2 * 3.14 * radius
# Print the diameter and circumference of the circle
print("The diameter of the circle is: ", diameter)
print("The circumference of the circle is: ", circumference)
```

Python Programming: Diameter and circumference of the circle

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