Calculate the circumference of a circle whose diameter is 8 m.
| May 23, 2021 | education
1) Find the radius of the circle, that is, divide the length of the diameter by 2.
8: 2 = 4 m – radius of the circle;
2) the formula for finding the circumference looks like this: L = 2 * pi * r. Where pi is a constant number equal to 3.14 (rounded to hundredths), r is the radius of the circle.
Substitute 4 meters in the formula instead of the radius and find the length of this circle. We get: L = 2 * pi * 4 = 10 pi = 8 * 3.14 = 25.12 meters.
Answer: 25.12 meters.
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