A = pi(d/2)^(2)
A = 3.1416 X (6/2)^(2)
A = 3.1416 X 3^(2)
A = 3.1416 X 9
A = 28.2744 sq. ft. = 28 sq,ft. 3.2928 sq.ins.
NB Remember d/2 = r (radius), or two radii form one diameter.
Area = pi X radius squared
A = pi r^(2)
A = 804 square feet.
The area of a circle whose diameter is 3 feet, is 7.07 sq feet.
The circumference of of a circle whose diameter is 1.5 feet is: 4.712 feet (diameter x Pi = circumference).
9pi (about 28 and one quarter) square feet.
The area of a circle with a diameter of 8 feet is: 50.27 square feet.
The area of a circle, if the diameter is 4.3 feet, is: 14.52 square feet.
The area of a circle that has a diameter of four feet is: about 12.57 square feet.
A circle with a diameter of 6 feet has an area of 28.27 square feet.
The circumference of a circle whose diameter is 27 feet is about 84.82 feet.
The circumference of a circle whose diameter is 1.5 feet is about 4.712 feet. (d x Pi = c)
A circle with a diameter of three feet has a circumference of 9.4 feet.
The area of a circle, if it has a diameter of 13 feet, is: 132.7 square feet.