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max2010maxim [7]
3 years ago
13

A circle has a circumference of 12 it has an arc of length 11 what is the central angle of the arc in degreesA circle has a circ

umference of 12 it has an arc of length 11 what is the central angle of the arc in degrees
Mathematics
2 answers:
Ilia_Sergeevich [38]3 years ago
7 0

Answer:

330°

Step-by-step explanation:

The central angle:

360°×\frac{11}{12}

=30°×11

=330°

IrinaVladis [17]3 years ago
4 0

Answer:   330⁰

<u>Step-by-step explanation:</u>

Circumference (C) = 2π · radius(r)

                          12 = 2π·r

                     \dfrac{6}{\pi}=r

Arc length (s) = radius(r) · θ           <em>(reminder that theta is in radians)</em>

                  11=\dfrac{6}{\pi}\cdot \theta\\

                  \dfrac{11\pi}{6}=\theta

To convert radians to degrees, use the proportion:   π = 180⁰  

\dfrac{\pi}{180}=\dfrac{11\pi}{6x}\\\\6x(\pi)=180(11\pi)\\\\x=\dfrac{180(11\pi)}{6\pi}\\\\x=30(11)\\\\x=330

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