About 3.14 inches (3.14159 to greater precision - it is the diameter x pi)
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To find the diameter of a circle with a 3-inch circumference, you can use the formula C = πd, where C is the circumference, π is pi (approximately 3.14159), and d is the diameter. Plugging in the given circumference of 3 inches, the formula becomes 3 = πd. Solving for d, you get d ≈ 0.955 inches. Therefore, the diameter of a circle with a 3-inch circumference is approximately 0.955 inches.
If a circle has a radius of 1, the diameter is 2, and the circumference is 6.28 (approximately).
The formula to calculate the circumference of a circle is C = πd, where C is the circumference, π is approximately 3.14, and d is the diameter of the circle. If the diameter is 1 cm, then the circumference would be C = π(1) = 3.14 cm.
-- Find the circumference of a full circle with a diameter of 12 mm.-- The perimeter of the semi-circle is(1/2 the circumference of the full circle) + (the diameter).
Circumference of any circle = 2*pi*radius or diameter*pi