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29-01-2020
Mathematics

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The radius of a circle is 4 kilometers. What is the length of a 135 degrees arc?

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marcthemathtutor marcthemathtutor

29-01-2020

Answer:

3π kilometers ( = 9.43 km)

Step-by-step explanation:

refer to attached for reference

in our case, r = 4 km, θ=135 degrees

hence

arc length, s = (135/360) x 2π x (4)

s = 3π kilometers ( = 9.43 km)

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