The area of a circle is calculated by the formula πr2
In this instance the radius is 1.5 inches and the square of that is 2.25
π is usually taken as 3.141592653589793
2.25 x 3.141592653589793 = 7.068583470577034
Rounded off to whole numbers - that's 7 square inches.
3.141 square inches
Area of circle in square inches = pi*radius squared
A 1.25-inch diameter circle contains 1.227 square inches.
Area of a circle = pi*radius2 inches
256*pi square inches Area of a circle = pi*radius2
A 4.75-inch diameter circle contains 17.72 square inches.
The area of a circle with an 8 inch diameter is approximately 50.27 square inches.
70.9 square inches.
Area of circle: pi*6 squared = 36*pi square inches
The area of a 3-inch diameter circle is about 7.068 square inches.
19.63 square inches are in the area of a 5-inch diameter circle.
In a circle with a diameter of 4, there would be approximately 12.56 square inches in the circle.