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Tatiana [17]
3 years ago
15

What is the measure of 0 ?

Mathematics
1 answer:
MrRissso [65]3 years ago
4 0

Answer:

Option A. 4 radians

Step-by-step explanation:

step 1

Find the circumference of the circle

The circumference is equal to

C=2\pi r

we have

r=5\ cm

substitute

C=2\pi (5)

C=10\pi\ cm

step 2

Find the measure of angle \theta

we know that

The circumference of the circle subtends a central angle of 2π radians

so

using proportion

Find out the central angle by an arc length of 20 cm

\frac{10\pi}{2\pi}=\frac{20}{x}\\\\x=2\pi (20)/10\pi\\\\x=4\ radians

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