To calculate the area of a circle using the formula \( A = \pi r^2 \), where \( r \) is the radius of the circle, we have:
- Radius \( r = 4 \) cm
- Approximating \( \pi \) as 3.14
Now, we can substitute the value of \( r \) into the formula:
\[ A = 3.14 \times (4)^2 \]
Calculating \( (4)^2 \):
\[ (4)^2 = 16 \]
Now substitute this value back into the formula:
\[ A = 3.14 \times 16 \]
Now, perform the multiplication:
\[ A = 50.24 , \text{cm²} \]
Thus, the area of the circle is approximately:
\[ A = 50.24 , \text{cm²} \]
Rounded to the nearest hundredth, the area is \( 50.24 , \text{cm²} \).