In circle A, the radius is 3 and the m angle CAT = 150°. Find the length of arc CST to the nearest integer. http://curriculum.kcdistancelearning.com/courses/GEOMx-HS-A09/b/assessments/C-CirclesExam/Geometry_7_Exam_110q3.gif
take 150/360 and multiply by circumference that's pretty much it
n --- ) (2 r π) 360 * n = CAT angle measurement * = degrees symbol
how do i find r
circumference is all the way around the circle circles have 360 degrees for half circle 180 degrees or half the circumference 150/360 is just ratio or part of circumference
sorry nevermind
r is in the problem, wut?
i got 0.0218
No, C * (150/360) is arc length for CT C * (210/360) is arc length for CST where C is circumference
oh 7.8539 rounded would be 7.854?
n --- ( 2r π ) 360 r is you radius
is the 70.854 right
Uh, no
radius |dw:1366699165078:dw|
dang im so lost , can you please walk me through it. I did the 150/360 * 2*3*pi
note the word middle center means that in a circle you may have many radii
Whats that mean
|dw:1366699490978:dw| not to scale in you problem you have how many radii (lines going to the center)? what is the measurement of the radius
3
|dw:1366699643789:dw| not to scale will the measurement of the radius be different from the other radii ? Explain
yes
its a bit off your math problem but i want to make sure you know the basics
all good? circles have infinite radii by the way
so what equation should i do
C * (210/360) is arc length for CST
10.996
answer asks for nearest integer, so 11
thank you so much
welcome
do you know any of these circle circumference = 2 π 2 area = 2^2π
cicumference = 2r π
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