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The arc length of an arc subtended by an angle measuring  11π/18 radians is 78.6 inches.

What is the radius of the arc?

  • approximately 36.5 inches
  • approximately 40.9 inches
  • approximately 48.0 inches
  • approximately 128.6 inches
 Mar 30, 2020
 #1
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pi d   is circumference

 

11pi/18   /   2pi    is   fraction of circumference

 

 

(11pi /18)  /  2pi      *  pi *d    =   78.6       solve for 'd'     then radius is 1/2 d

 Mar 30, 2020

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