Arc Length & Sector Area 2

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Diameter

A chord that passes through the center of the circle

Sector Area

A piece of a circle enclosed by two radii of a circle and their intersected arc

Arc

A portion of the circumference of a circle

Circle

All points equidistant from a given point called the center of the circle

Central Angle

An angle formed at the center of a circle

75 cm²

Find the area of the sector

π

Find the exact value of the ARC LENGTH of AB.

Area of a Circle

The amount of space occupied in the interior of a circle

Arc Measure

The degree measure of an arc. It is equal to the central angle that intercepts the arc

Circumference

The distance around the circle

Radius

The distance from the center of a circle to any point on the circle

Arc Length

The length of a portion of a circle

314cm

The radius of a circle is 10 cm. What is the area? (round answer to nearest whole number)

19cm

The radius of a circle is 3 cm. What is the circumference? (round answer to nearest whole number)

12

The radius of the circle in 6 units. What is the diameter?

units²

What are the correct units for the area of a sector?

units

What are the correct units for the length of an arc?

9π cm²

What is the EXACT value of the area of sector AB?

6

What is the missing value in the expression for the ARC LENGTH of AB?

9

What is the missing value in the expression for the AREA of SECTOR AB?

255/360

What is the ratio of the arc measure to the circle?

329/360

What is the ratio of the arc measure to the circle?

Central Angle

an angle whose vertex is the center of a circle


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