Learn how to find the length of an arc

The video tutorial covers solving a geometry problem from homework, focusing on calculating the arc length of a semicircle. The teacher explains the importance of understanding angles and semicircle properties, and demonstrates the calculation process using given measurements. The tutorial concludes with a brief discussion on the units of measurement and addresses student questions.

What is the first step in solving the problem of finding the arc length from point N to M?

• Calculate the area of the circle

• Determine the angle measurement

• Find the circumference of the circle

• Identify the radius of the circle

If a semicircle has an angle of 100 degrees, what is the angle of the other part of the semicircle?

• 80 degrees

• 100 degrees

• 200 degrees

• 180 degrees

What is the total angle measurement of a semicircle?

• 90 degrees

• 360 degrees

• 180 degrees

• 270 degrees

How do you calculate the radius if the diameter of a circle is given as 3?

• Multiply the diameter by 2

• Subtract 2 from the diameter

• Divide the diameter by 2

• Add 2 to the diameter

What is the final arc length when the angle is 80 degrees and the radius is 1.5?

• 2.00 yards

• 1.50 yards

• 1.05 yards

• 1.04 yards