Find the length of a arc given the radius of a circle

The video tutorial explains how to calculate the length of an arc in a circle. It begins by introducing the problem and the formula needed to find the arc length. The teacher then explains how to determine the radius from the given diameter and how to calculate the necessary angles. Finally, the tutorial demonstrates the complete calculation process, resulting in the arc length of 6.28 feet.

What is the formula to calculate the length of an arc?

• L = (X/180) * π * radius

• L = X * π * radius

• L = (X/360) * radius

• L = (X/360) * π * radius

If the diameter of a circle is 12 feet, what is the radius?

• 24 feet

• 3 feet

• 6 feet

• 12 feet

How many degrees are in a semi-circle?

• 90 degrees

• 180 degrees

• 270 degrees

• 360 degrees

If two angles in a semi-circle are 50 and 60 degrees, what is the third angle?

• 80 degrees

• 90 degrees

• 100 degrees

• 70 degrees

What is the length of the arc if the angle is 120 degrees and the radius is 6 feet?

• 10.46 feet

• 8.37 feet

• 6.28 feet

• 4.19 feet