# How to find the area of circles?

#### Understand the Problem

The question is asking for the method to calculate the area of circles. The approach involves using the formula for the area of a circle, which is π times the radius squared (A = πr²).

$A = πr^2$

The final answer is $A = πr^2$

#### Steps to Solve

1. Identify the formula

The formula for the area of a circle is $A = πr^2$, where $A$ is the area and $r$ is the radius.

2. Plug in the values

To find the area of a circle, plug in the value of the radius ($r$) into the formula. For example, if the radius is 4, the area would be $A = π(4)^2 = 16π$.

3. Calculate the result

Calculate the result by multiplying the radius squared by $π$. The result will be the area of the circle.

The final answer is $A = πr^2$

The formula for the area of a circle is a fundamental concept in geometry and is used in many real-world applications, such as architecture and engineering. The value of $π$ is approximately 3.14159, but it is often left as $π$ in calculations.
A common mistake is to forget to square the radius before multiplying by $π$. Make sure to follow the order of operations (PEMDAS) to get the correct result.