To find the area of a circle, we use the formula:

$A = \pi r^2$

Where:

• $A$ is the area of the circle
• $r$ is the radius of the circle
• $\pi$ is approximately 3.14159

Given that the radius $r = 5$, we substitute this into the formula:

$A = \pi (5)^2 = \pi \times 25 \approx 3.14159 \times 25 = 78.53975$

So, the area of the circle is approximately:

$A \approx 78.54 \, \text{square units}$

Would you like further details or explanations on this?

Related questions:

1. How do you find the circumference of a circle?
2. What happens to the area of a circle if the radius is doubled?
3. How is the area of a circle related to the diameter?
4. How would you calculate the area of a sector of a circle?
5. How can you derive the formula for the area of a circle using integration?

Tip: Always remember that the area of a circle grows quadratically with the radius, meaning that if you double the radius, the area will increase by a factor of four.