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Saalaa · Answer 1 · 2017-01-19T02:23:47+0000

Radius of the arc, r = 7 ft, Angle the arc subtends = 210°

Length of arc = (θ/360°)*2πr

Length of arc = (210°/360°)*2π*7

= (7/12)*2π*7 = 49π/12

Length of arc = 49π/12 ≈ 49*3.14159 / 12 ≈ 12.828

Length of arc ≈ 12.828 feet

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