A circle with circumference \blue{20}20start color #6495ed, 20, end color #6495ed has an arc with a 72^\circ72 ∘ 72, degrees cen
tral angle. What is the length of the arc?
2 answers:
Answer:
Length of Arc = 4
Step-by-step explanation:
Circumference is the whole circle's perimeter.
Arc length is a "part" of the circumference.
Whole circle is 360 degrees, so the arc length with a central angle of 72 degrees will be:
72/360 = 1/5th of the whole circle
The whole circle has circumference of "20", so 1/5 th of that would be:
(1/5) * 20 = 4
Length of Arc = 4
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