LT F: Area of a Sector

Front

What is the area of a sector?

Back

The area of a sector is the portion of a circle enclosed by two radii and the arc between them.

Front

How do you calculate the area of a sector?

Back

Area of a sector = (θ/360) × πr², where θ is the angle in degrees and r is the radius.

Front

What is the formula for the area of a circle?

Back

Area of a circle = πr², where r is the radius.

Front

What does 'shaded sector' mean?

Back

A shaded sector is the part of a circle that is highlighted or colored to indicate a specific area.

Front

If the radius is 5 cm and the angle is 60 degrees, what is the area of the sector?

Back

Area = (60/360) × π × (5)² = 13.09 cm² (rounded to 2 decimal places).

Front

What is the unit of area?

Back

The unit of area is typically square units, such as cm² or m².

Front

What does 'rounding to 1 decimal place' mean?

Back

Rounding to 1 decimal place means adjusting a number to one digit after the decimal point.

Front

If the area of a sector is 15.4 m², what does this represent?

Back

This represents the size of the shaded region within the sector of a circle.

Front

What is π (pi)?

Back

π (pi) is a mathematical constant approximately equal to 3.14, used in calculations involving circles.

Front

What is a radius?

Back

A radius is a line segment from the center of a circle to any point on its circumference.