A circle with a radius of 30 feet has an area of 2,827.43 square feet.
A circle with a radius of 4.3 feet has an area of 58.09 square feet.
The area of a circle is pi*(radius)^2. If the 8 ft is the diameter, the area is pi*(4 ft)^2~=50.27 ft^2 (ft^2 is square feet)
Area of circle = PI * radius^2, so PI * 6^2 = 113.09733553 square feet.
area of full circle = 400 sq. ft. if area = pi * radius2 then radius = square root ( area / pi ) = 11.284 radius (approx). = 22.568 diameter (approx).
Knowing that the area of a circle is its radius squared times Pi, the area of a 10 ft radius circle is 100*Pi square ft, or about 314 square feet.
A cylinder that has a radius of 3 ft and height of 4 ft has a surface area of 131.95 square feet.
Area = 177,320 square feet.
A circle with a radius of 30 feet has an area of 2,827.43 square feet.
A circle with a radius of 4.3 feet has an area of 58.09 square feet.
A circle with a radius of 9 feet has an area of 254.47 square feet.
A circle with a radius of 10 feet has an area of 314.16 square feet.
Area of a circle with a 4 feet radius = 16*pi square feet
It is: 72*pi square feet if the radius is 12 feet and not12 square feet
The surface area is 2,124 square feet.
Area in square feet = pi*radius squared
A cone with a 30ft height and a 15ft radius has a total surface area of approximately 2,287.44 square feet.