Learn to determine the length of an arc for a circle

The video tutorial explains how to calculate the length of an arc in a circle. It begins by discussing central angles and arcs, then sets up a problem to find the arc length between points K, L, and M. The teacher identifies the radius and introduces the formula for arc length: (angle/360) * 2πR. The calculation is demonstrated, resulting in an arc length of 25.43 millimeters. The tutorial concludes by clarifying the units used for distance.

What is the primary focus of the initial discussion in the video?

• Calculating the area of a circle

• Measuring central angles and arcs

• Finding the volume of a sphere

• Understanding the properties of triangles

What is the significance of DM in the context of the problem?

• It represents the diameter of the circle

• It is the central angle

• It is the length of the arc

• It is the radius of the circle

Which formula is used to calculate the length of an arc?

• Volume = 4/3πr³

• Length = (X/360) × 2πr

• Circumference = 2πr

• Area = πr²

What is the central angle measure used in the calculation for arc KLM?

• 160 degrees

• 60 degrees

• 360 degrees

• 100 degrees

What is the final calculated length of the arc KLM?

• 25.13 millimeters

• 160 millimeters

• 9 millimeters

• 25.43 millimeters