areas and circumference
similarity
areas of sectors
arc length
equations of circles
100

What is the area of a circle with radius=6m?

113.04 m2

100

One circle has a radius of 4 and another has a radius of 2. What is the scale factor?

2

100
what is the area of a sector in a circle with radius =12m and central angle = 30 degrees?
37.68 m2
100
what is the arc length of a circle with diameter = 92m and a central angle of 35 degrees?
28.0855 m
100

Identify the center of the following circle: (x - 2)2 + (y + 3)2 = 25

(2, -3)

200

what is the circumference of a circle with diameter = 11m?

34.54

200

Solve the proportion x/3 = 6/9

2

200
what is the area of a sector in a circle with radius = 3m and central angle =45 degrees?
3.5325 m2
200
what is the arc length of a circle with diameter = 29m and a central angle of 160 degrees?
40.471 m
200

Identify the radius of the following circle: (x - 2)2 + (y + 3)2 = 25

5

300

what is the area of a circle with diameter = 11m?

94.985 m2

300

Solve the proportion x/5 = 3/10

1.5

300
what is the area of a sector in a circle with diameter= 11 and central angle = 20 degrees?
5.2769 m2
300
what is the arc length of a circle with radius = 43m and a central angle of 14 degrees?
10.5 m
300

Identify the diameter of the following circle: (x - 2)2 + (y + 3)2 = 25

10

400

what is the circumference of a circle with radius = 12.15m?

76.302

400
Solve the proportion (x + 4)/2 = 4/8

-3

400
DAILY DOUBLE!!!!! what is the area of a sector in a circle with diameter = 50m and central angle = 120 degrees?
654.1667 m2
400
what is the arc length of a circle with radius = 39m and a central angle of 100 degrees?
68.03 m
400

Identify the center and radius of the following circle: x2 + y2 = 2

(0, 0), 1.414

500
If the area of a circle is 115 m2 what is the radius of the circle?
6.05m
500

What two things have to be true for two figures to be similar?

equal angles

proportional sides

500
The area of a circle is 55 m2. The area of a sector in the circle is 13.75 m2. What is the measure of the central angle in degrees?
90 degrees
500
If the arc length of a circle = 12m and the circumference of that circle = 72m what is the measure of the central angle in degrees?
60 degrees
500

Write the equation of the circle that has center (0, 4) and radius 7.

x2 + (y - 4)2 = 49

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