How to Accurately Measure the Diameter of a Circle
Learn the simple steps to measure a circle's diameter effectively using a ruler or measuring tape.
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To measure a circle's diameter, use a ruler or measuring tape. Start at one edge of the circle and span across to the opposite edge, making sure you pass through the center. This distance is the diameter. If you know the circle's radius, multiply it by 2 to find the diameter. For example, a circle with a radius of 5 cm has a diameter of 10 cm.
FAQs & Answers
- What is the formula to find the diameter of a circle? The diameter can be found by multiplying the radius by 2 (Diameter = 2 * Radius).
- Can you measure a circle's diameter with a tape measure? Yes, you can use a measuring tape to measure across the circle at its widest point to find the diameter.
- How do I find the diameter if I have the circumference? You can find the diameter by dividing the circumference by π (Diameter = Circumference / π).
- What is the difference between diameter and radius? The radius is half the diameter; it is the distance from the center of the circle to any point on its edge.