courtneyaugusto
courtneyaugusto courtneyaugusto
  • 31-07-2016
  • Mathematics
contestada

Find the length of the arc.

Find the length of the arc class=

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olemakpadu
olemakpadu olemakpadu
  • 31-07-2016
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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