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nikitadnepr [17]
3 years ago
11

In a circle, an arc has an arc length of 4π. If the arc measure is 80°, what is the length of the radius of the circle?

Mathematics
1 answer:
musickatia [10]3 years ago
6 0

Answer:

9 units.

Step-by-step explanation:

Arc length = r C where r = radius and C is the arc measure in radians.

Arc measure =  80 * π/180 radians. So:

4π =  r * 80π/180

4 = 80r / 180

80r = 4 * 180

r =  720 /80

r = 9.

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