Normally, when we want to find the arc of length given a radius and an angle we use the next equation:
[tex]S=rθ[/tex]where:
s represents the arc of length
r represents the radius
θ represents the angle
We need to find the radius, so we need to solve for r:
[tex]r=\frac{s}{θ}[/tex]Replace using θ=13 rad and s=13
Then:
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