What is the formula for measuring the circumference of a circle using 3.14 for pi and rounding to the nearest unit?
To measure the circumference of a circle, you can use the formula C = 2πr, where C represents the circumference, π represents the mathematical constant pi (approximately 3.14), and r represents the radius of the circle. The radius is the distance from the center of the circle to any point on its edge.
To calculate the circumference, you need to know the value of the radius of the circle. Once you have the radius, multiply it by 2π (or approximately 6.28) to get the circumference.
For example, let's say the radius of the circle is 5 units. You would substitute this value into the formula:
C = 2πr = 2 * 3.14 * 5 = 31.4 units (rounded to the nearest unit).
Therefore, the circumference of the circle, using 3.14 for pi and rounding to the nearest unit, is approximately 31 units.