Radius of the circle is the square root of (123/pi) = 6.257 feet to 3 decimal places
You don't mention whether the 4 feet is the circumference, diameter or radius. The area of a circle is pi times the radius squared. If 4 feet is the circumference, the area is about 1.3 feet squared. If 4 feet is the diameter, the area is about 12.6 feet squared. If 4 feet is the radius, the area is about 50.3 feet squared.
A circle with a radius of 3 cm has an area of 28.27 square cm.
The radius of the circle is 4 .5 ft. Where r is the radius and Pi is the mathematical constant: r2*Pi = area of a circle. Therefore the area of your circle must be 7.069 ft2
Area of a Circle: A = (pi) * r ^ 2 (Area equals Pi Times the radius Squared) R = 3/2 (Diameter = 3, Radius = 1/2 of the Diameter) A = 3.1415 * (3/2)^2 A = 3.1415 * 2.25 A = ~7.068 Square Feet
28.3 feet2
Radius of the circle is the square root of (123/pi) = 6.257 feet to 3 decimal places
Area of a circle equals pi (~3.14) multiplied by the radius squared. So to find the area of that circle your equation is (3.14)(3)^2 which equals approximately 27.
Area of the circle: pi*182 = 1017.876 square feet to 3 decimal places
Area = pi*3.72 = 43.008 square feet to 3 decimal places
Area of a circle = pi*radius2 Area = 314.159 square feet to 3 decimal places.
Area of circle: pi times 9 squared = 254.469 square feet rounded to 3 decimal places
It is: pi*42 = 50.265 square feet to 3 dp
You don't mention whether the 4 feet is the circumference, diameter or radius. The area of a circle is pi times the radius squared. If 4 feet is the circumference, the area is about 1.3 feet squared. If 4 feet is the diameter, the area is about 12.6 feet squared. If 4 feet is the radius, the area is about 50.3 feet squared.
You don't mention whether the 4 feet is the circumference, diameter or radius. The area of a circle is pi times the radius squared. If 4 feet is the circumference, the area is about 1.3 feet squared. If 4 feet is the diameter, the area is about 12.6 feet squared. If 4 feet is the radius, the area is about 50.3 feet squared.
Area: pi*112 = 380.133 square feet rounded to 3 decimal places
The area of a circle is pi.r2 where pi=3.14159... and r=the radius of the circle. So assuming the dimension of 6' given is for the diameter, (giving a radius of 3',) the calculation is: 3.14159x32=3.14159x9=28.27square feet