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?
1 answer:
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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Step-by-step explanation:
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25%=25/100=1/4
ratio is 1:4 or 2:8 or 6:12
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0.5a = 5.3
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