Area of 4 Inch Circle

Area of 4 inch circle calculator is used to calculate the area of a circle with diamater of 4 inches. To calculate what is the area of a 4 inch diameter circle, use the formla of A = πr², where r is the radius. We can also use the A = 1/4πd² formula where d is the diameter.

What is the area of a 4 inch diameter circle?

The area of a 4 inch circle is 12.57 square inches.

Using the formula A = 1/4πd² where d is the diameter, we have
Area = 1/4πd² = 1/4 x 3.14 x 4² = 12.57

What is the radius of a circle with a 4 inch diameter?

The radius of a 4 inch circle is 2 inches, because radius is half of a diameter in a circle.