Arc Length Conjecture

What is the CIRCUMFERENCE of the given circle (r = 4 cm) in terms of pi?

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Rounded to the nearest hundredth of a centimeter, the circle's FULL circumference is 25.14 centimeters.

Since we can calculate the FULL circumference of any circle, we can easily compute arc length too.

The length of an arc of a circle is simply a ______________ of the full circle's circumference.

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To determine the fraction that should be used in our calculations, we must know the size of the angle located at the circle's center.

To determine the fraction that should be used in our calculations, we must know the size of the angle located at the circle's center.

Arc Length Conjecture: The length of an arc equals...

Arc Length Conjecture: The length of an arc equals...