The area would be found by taking the square of 2.5 feet, and then multiplying that square by the value of pi, approximately 3.14. So the product = 2.5 ft X 2.5 ft X 3.14 will give you the area of a circle that has a diameter of 5 feet.
This comes from the formula for the area of a circle:
A = pi X r2
The area of a circle is PI times the radius of the circle squared. The radius of a one foot diameter circle it 1/2 or .5 feet. .5 squared is .25 PI is 3.1416 3.1416 times .25 = .79 square feet So, there are about .8 square feet in a 1 foot diameter circle.
The area of a circle with a 5-inch diameter is: 19.63 square inches.
The area of a semi-circle with a diameter of five is: 9.817 units2
The area of a circle is pi × r2. pi = 3.141592653589793 5 feet = 60 inches. The radius is half the diameter so the radius is 30 inches. If you plug 30 inches into the formula you get the answer of 2827.4333882308138 inches for the area of the circle.
Circumference of circle: 5*pi = 15.708 feet rounded to 3 decimal places
Area of the circle = pi*2.52 square feet
2.52 feet if you mean a 5 foot area 1.59 feet if you mean a 5 foot circumference
Assuming a diameter of 5 inches.The area of this circle is: 19.63
If the circle is five feet across - that is the diameter.
If the radius is 5 feet then the diameter is 10 feet
The area of a circle is PI times the radius of the circle squared. The radius of a one foot diameter circle it 1/2 or .5 feet. .5 squared is .25 PI is 3.1416 3.1416 times .25 = .79 square feet So, there are about .8 square feet in a 1 foot diameter circle.
The area of a circle with a 5-inch diameter is: 19.63 square inches.
The area of a semi-circle with a diameter of five is: 9.817 units2
d = 5 feet.
The diameter will be: 15.5/pi = 5 feet rounded
19.63 square inches are in the area of a 5-inch diameter circle.
It is the radius squared time Pi, or approximately 2.5*2.5*3.14=19.69 sq feet