Exploring Arc Length and Area Concepts

What is the formula for calculating arc length?

• Angle / 360 * Circumference

• 2 * Pi * Radius

• Angle / Circumference * 360

• Pi * Radius^2

What is the circumference formula used in arc length calculation?

• Radius / 2 * Pi

• Pi * Diameter

• 2 * Pi * Radius

• Pi * Radius^2

How do you round the result of an arc length calculation?

• Do not round

• To the nearest whole number

• To the nearest tenth

• To two decimal places

How do you find the fraction of the circle being dealt with in arc length calculation?

• 2 * Pi * (Angle in degrees / 360)

• Angle in degrees / 360

• Angle in degrees * Radius

• Angle in degrees / Pi

What is the radius in the example problem for calculating arc length?

• 5 units

• 6 units

• 8 units

• 10 units

What is the purpose of leaving the answer in terms of pi?

• To get an exact value

• To simplify the calculation

• All of the above

• Because pi cannot be accurately represented

What is the formula for calculating the area of a sector?

• Angle / 360 * Pi * Radius^2

• Angle / 360 * 2 * Pi * Radius

• Angle / 360 * Area

• Angle / 360 * Circumference

In the example of calculating area of a sector, what is the radius used?

• 6 units

• 5 units

• 4 units

• 7 units

When calculating the area of a sector in terms of pi, what do you do differently?

• Add pi at the end of the calculation

• Leave pi out of the calculation

• Divide everything by pi

• Multiply everything by pi

What is the result when calculating the sector area in terms of pi for a radius of 5?

• 31.25 pi

• 6.25 pi

• 12.5 pi

• 25 pi