To find the area of a circle when the diameter is given, we can follow these steps:
1. Determine the radius of the circle: The radius [tex]\( r \)[/tex] of a circle is half of its diameter. Given the diameter is 4 units, we can calculate the radius as: [tex]\[
r = \frac{\text{diameter}}{2} = \frac{4}{2} = 2 \text{ units}
\][/tex]
2. Use the formula for the area of a circle: The area [tex]\( A \)[/tex] of a circle is given by the formula: [tex]\[
A = \pi \times r^2
\][/tex] Since we are given the option to use 3.14 for [tex]\(\pi\)[/tex], we substitute [tex]\(\pi = 3.14\)[/tex] and the radius [tex]\( r = 2 \)[/tex] units into the formula.
3. Calculate the area: [tex]\[
A = 3.14 \times (2)^2 = 3.14 \times 4 = 12.56 \text{ square units}
\][/tex]
Therefore, the area of the circle is [tex]\( 12.56 \)[/tex] square units.
