Area = pi*6.52 = 132.732 square feet to 3 decimal places
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The area of a circle with a 13 ft diameter is: 132.7 square feet.
The area of a circle with a diameter of 13 centimeters is: 132.7 cm2
Circles have diameters, so we will assume from your question that it is a circular flower bed. Square feet is a measure of area. Cubed feet is a measure of volume. You need the area of the flower bed that has a diameter of 13 feet. To find the area of a circle you use the formula Area = pi * radius squared Pi is approximately 3.14 The radius of a circle is one half of the diameter of a circle. In your case 13/2 = 6.5 A = pi * r2 A = 3.14 * (6.5)2 A = 132.665 square feet
Circumference = pi x diameter = pi x 13 = 40.84 feet or 40'10"
Circumference of a circle = diameter x (pi) = 13 pi = 40.841 feet (rounded)