text: # Area of a circle with a diameter of 6
  
  #### Understand the Problem
  
  The question is asking for the area of a circle given that its diameter is 6. To find the area, we will use the formula: Area = π * (radius)^2. Since the radius is half of the diameter, we will first calculate the radius (which is 3) and then use it to find the area.
  
  #### Answer
  
  The area of the circle is $9\pi$ or approximately $28.26$.
  ##### Answer for screen readers
  
  The area of the circle is $9\pi$ or approximately $28.26$.
  
  #### Steps to Solve
  
  1. Calculate the radius Since the diameter is given as 6, we can find the radius by dividing the diameter by 2. The formula is: $$\text{radius} = \frac{\text{diameter}}{2}$$
  
  Substituting the given diameter: $$\text{radius} = \frac{6}{2} = 3$$
  
  1. Use the area formula Now that we have the radius, we can find the area of the circle using the area formula: $$\text{Area} = \pi \times (\text{radius})^2$$
  
  Substituting the radius we calculated: $$\text{Area} = \pi \times (3)^2$$
  
  1. Calculate the area Now we compute the area: $$\text{Area} = \pi \times 9 = 9\pi$$
  
  2. Approximate the area If needed, we can approximate the area using $\pi \approx 3.14$: $$\text{Area} \approx 9 \times 3.14 = 28.26$$
  
  The area of the circle is $9\pi$ or approximately $28.26$.
  
  #### More Information
  
  The area of a circle increases with the square of the radius. This means that even a small increase in the radius will result in a significantly larger area. For instance, if the radius were to increase from 3 to 4, the area would increase from $9\pi$ to $16\pi$.
  
  #### Tips
  
  • Forgetting to divide the diameter by 2 to find the radius.
  • Misapplying the area formula by using diameter instead of radius.
  • Inaccurate approximation of $\pi$ could lead to wrong answers when rounding.
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