How to find the arc length of a circle using the formula

The video tutorial explains the arc length formula, s = rθ, and provides tips for memorizing it. It discusses the variables involved, such as the radius and angle, and demonstrates converting degrees to radians. The tutorial walks through calculating the arc length and emphasizes the importance of practical application by approximating the result without using π.

What is the formula for calculating the arc length of a circle?

• S = R / Theta

• S = R * Theta

• S = Theta / R

• S = R + Theta

If the radius of a circle is 3 meters, what is the arc length when Theta is π/6 radians?

• π/3 meters

• π meters

• 2π meters

• π/2 meters

How do you convert 30 degrees to radians?

• Multiply by π/180

• Multiply by 180/π

• Add π/180

• Subtract π/180

Why might you use a decimal approximation instead of π in practical measurements?

• To simplify calculations

• To make the answer more precise

• To avoid using radians

• To make the answer more relatable in real-world contexts

What is the approximate decimal value of π/2 used in practical measurements?

• 2.71

• 3.14

• 0.78

• 1.57