Find the area of this circle. Use 3.14 for \( \pi \).

To find the area of a circle, you can use the formula \( A = \pi r^2 \), where \( A \) is the area and \( r \) is the radius. If you have a radius, simply square it and multiply by 3.14. For example, if the radius is 5 units, the calculation would be \( A = 3.14 \times 5^2 = 3.14 \times 25 = 78.5 \) square units. Don’t forget about the diameter! It’s twice the radius, so if you know the diameter instead, just divide it by 2 to find the radius, and then you can calculate the area like a math wizard! For instance, if the diameter is 10 units, the radius would be 5 units, leading you right back to an area of 78.5 square units. Now that's magical math!