Alison is jogging on a circular track that has a radius of 140 feet. She runs along the track from point R to point N, a distance of 230 feet. Find to the nearest degree, the measure of minor arc RN.
47
74
94
123
3. Multiple Choice
3 minutes
1 pt
In the equation (x+2)2+(y-3)2=4, the radius of the circle is...
4
2
3
16
4. Multiple Choice
3 minutes
1 pt
In the equation (x-3)2+(y-2)2=16, the center of the circle is...
(3,2)
(-3, -2)
(-2, -3)
(2, 3)
5. Multiple Choice
5 minutes
1 pt
What is m∠ACB?
67.5°
90°
22.5°
45°
6. Multiple Choice
15 minutes
1 pt
What is x?
15
23
2
92
7. Multiple Choice
15 minutes
1 pt
Solve for x.
37.5
11
118
15
8. Multiple Choice
15 minutes
1 pt
If the length of the 45° region of this circle is 10 inches, what is the radius of the circle?
1.6in
3in
6.8in
2.5in
9. Multiple Choice
15 minutes
1 pt
In a circle, a 90° sector has area 64π in2. What is the radius of the circle?