How many acres in a 1000' diameter circle?

To calculate the area of a circle with a diameter of 1000 feet, you first need to find the radius by dividing the diameter by 2, which gives you a radius of 500 feet. The formula for the area of a circle is πr^2, where π is approximately 3.14159. So, the area of a circle with a radius of 500 feet is approximately 3.14159 x (500)^2 = 3.14159 x 250000 = 785,397.5 square feet. To convert square feet to acres, you divide by 43,560 (the number of square feet in an acre), which gives you approximately 18.02 acres in a circle with a 1000-foot diameter.