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slavikrds [6]
3 years ago
10

39. Find the length of each arc shown in red. Leave your answer in simplified radical form.

Mathematics
1 answer:
andre [41]3 years ago
6 0

Answer:

The length of the arc shown in red is \frac{22}{9}\pi\ in

Step-by-step explanation:

step 1

Find the circumference of the circle

The circumference is equal to

C=2\pi r

we have

r=4\ in

substitute

C=2\pi (4)

C=8\pi\ in

step 2

Find the length of the arc in red

Remember that the length of the circumference subtends a central angle of 360 degrees

so

by proportion find the length of the arc by a central angle of 110 degrees

\frac{8\pi}{360}=\frac{x}{110}\\ \\x=8\pi*110/360\\ \\x=\frac{880}{360}\pi\ in

Simplify

\frac{880}{360}\pi=\frac{22}{9}\pi\ in

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