What is the area of a coin?

The area of a coin can be calculated using the formula for the area of a circle, which is A = πr², where A is the area and r is the radius of the coin. To find the area, you first need to measure the radius (half of the diameter) of the coin. Once you have the radius, square it and multiply by π (approximately 3.14). For example, if a coin has a diameter of 2 inches, its radius would be 1 inch, resulting in an area of approximately 3.14 square inches.