The circumference of a circle with diameter d is pi*d
So if d = 8mi then circumference = 25.13 mi.
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An 8-foot diameter circle has a circumference of about 25.132 inches.
If the circle is 8 inches in diameter, its circumference would be: 25.13 inches (diameter x Pi = circumference)
The circumference of circle that is 8 cm is: about 25.13 cm (diameter x pi = circumference).
Easy. Multiply the diameter (8 yards) by Pi (about 3.1416). The result is the circle's circumference:8 x 3.1416 = 25.1328 yards circumference
Oh, dude, it's like you're asking me to do math or something. So, the formula for finding the diameter of a circle is just dividing the circumference by pi (π). So, in this case, the diameter would be 8 divided by π, which is approximately 2.55. But hey, who's really counting, right?