Arcs / Sectors

• What is the formula to calculate the circumference of a circle?

  2πr
• How do you calculate the length of a sector with radius 18m and angle 190°?

  59.66m
• What is the formula used to find the length of a sector?

  2πr (θ/360)
• What is the calculated length of the sector for radius 18m and angle 190°?

  59.66m
• How do you calculate the length of a sector with radius 51cm and angle 72°?

  64.05cm
• What is the formula used to find the area of a sector?

  (θ/360) x πr²
• How do you calculate the area of a sector with radius 16cm and angle 42°?

  93.78cm²
• What is the calculated area of the sector for radius 16cm and angle 42°?

  93.78cm²
• What are the steps to calculate the length of a sector?

  1. Use the formula: \(2\pi r \times \frac{\theta}{360}\)
  2. Substitute the radius and angle values.
  3. Calculate the result.
• What are the steps to calculate the area of a sector?

  1. Use the formula: \(\frac{\theta}{360} \times \pi r^2\)
  2. Substitute the radius and angle values.
  3. Calculate the result.