What is the area of a circle with a diameter of 4 inches?
The area of a circle is calculated using the formula A = πr², where A represents the area and r represents the radius of the circle. The radius is half the diameter, so in this case, r = 4 inches / 2 = 2 inches.
Plugging this value into the formula, we get A = π(2 inches)² = π(4) = 12.57 square inches.
Therefore, the area of a circle with a diameter of 4 inches is approximately 12.57 square inches.
To find the area of a circle, you can use the formula:
Area = π * (radius)^2
The radius of a circle is half of its diameter. So, if the diameter is 4 inches, the radius would be 2 inches.
Now, substituting the values into the formula:
Area = π * (2 inches)^2
Area = 3.14 * (2 inches)^2
Area = 3.14 * 4 square inches
Area = 12.56 square inches
Therefore, the area of a circle with a diameter of 4 inches is 12.56 square inches.