Vocabulary
A segment whose endpoints are the center and any point on the circle
A radius
Find the area of a circle with radius = 3 inches
9 pi square inches or 28.26 square inches
What is the area of the arc with a measure of 195 and a radius of 16
435.6 in squared or 136.7 pi in
What is the measure of arc AB (Center of cirlce is 28)
28 degrees
Identify the center and radius of the circle Refer to slideshow
(2,-5) r=3
A chord that contains the center of a circle
Diameter
Find the circumference of a circle with = 3
6 pi inches or 18.84 inches
What is the arc length of the giver arc? (Radius of 12 kmand the arc legnth around the center of the circle is 135 degrees)
28.3 or 9 pi km
What is the measure of angle AOB (AB is 32 degrees)
32 degrees
Write the equation for the circle Refer to slideshow
x2 + (y-3)2=9
A segment whose endpoints are on a circle
Chord
You are playing duck, duck, goose in a circle that has a diameter of 10 feet. If you run for a total of 300 feet, how many times did you run around the circle?
about 9.55 times
A sprinkler waters a 45-degree sector of a circle. If the spray reaches 20 feet, how many square feet of grass are getting watered
50 pi square feet or 157 square feet
What is measure of the inscribed angle
Refer to slidewshow for picture
40 degrees
Given that the center of a circle is at (-11,-8) and the radius is 4 , write the equation of the circle
(x+11)2+(y+8)2=16
A line that intersects a circle in exactly one point and is perpendicular to that circle's radius
Tangent Line
If the area of a circle is 400 m squared, what is the diameter of the circle
approx 22.57 m
The measure of arc HL is 160 degrees and KI is 125 degrees. What is the measure of arc KL? Refer to the slideshow for picture
105 degrees
What is the measure of the arc formed by Soccer
Refer to slideshow
108 degrees
Give the center and radius of the floowing circle:
(y-3)2+(x+7)2-32=4
Center: (-7,3), radius =6
A line that intersects a circle at two points.
Secant Line
If the radius of the inner circle is 5 and the radius of the outer circle is 6, what is the area of the blue ring?
11 pi or 34.54
What is the jegnth o arc CD if the diameter of the cirlce is 10? Angle BCD and CDE are 110 and angle BE is 170. Refer to slideshow for picture
500 pi or 1570
What is the measure of the arc AE
Refer to slideshow
150 degrees
A circle has equation (x-5)+(y-2) = 100 If you move the circle 3 units to the left and 2 units down, what is the equation of the new circle
TRIPLE POINTS: 1500
(x-2)2+y2=100