Quiz 2 Post your answers with steps here - 15 views

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  #1 Jyoti Pakianathan on 03 Apr 13

   

  The marching band has ordered a banner with its logo. The logo is a circle with a 45 central angle. If the diameter of the circle is 3ft, what is the length of the major arc to the nearest tenth?

   

  <div class="cArrow"> </div><div class="cContentInner">The marching band has ordered a banner with its logo. The logo is a circle with a 45 central angle. If the diameter of the circle is 3ft, what is the length of the major arc to the nearest tenth?</div>

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• 
  #2 Elaine Kim on 04 Apr 13

   

  I'm not suree... but
  
  45 degrees / 360 x 3ft x 3.14
  45 degrees / 360 x 36in x 3.14
  45 degrees / 360 x 113.04
  0.125 x 113.04 = 14.13
  = 14.1inches
  = 1.175
  about = 1.2 feet.

   

  <div class="cArrow"> </div><div class="cContentInner">I'm not suree... but <br /> <br /> 45 degrees / 360 x 3ft x 3.14 <br /> 45 degrees / 360 x 36in x 3.14 <br /> 45 degrees / 360 x 113.04 <br /> 0.125 x 113.04 = 14.13 <br /> = 14.1inches <br /> = 1.175 <br /> about = 1.2 feet.</div>

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• 
  #4 David Kim on 06 Apr 13

   

  Circumference - Minor Arc = Major Arc
  
  Minor Arc
  = 45/360 x 3(3.14)
  = 1/8 x 9.42
  = 1.1775
  
  Circumference
  = 3(3.13)
  = 9.42
  
  Major Arc
  = 9.42 - 1.1775
  = 8.2425

   

  <div class="cArrow"> </div><div class="cContentInner">Circumference - Minor Arc = Major Arc <br /> <br /> Minor Arc <br /> = 45/360 x 3(3.14) <br /> = 1/8 x 9.42 <br /> = 1.1775 <br /> <br /> Circumference <br /> = 3(3.13) <br /> = 9.42 <br /> <br /> Major Arc <br /> = 9.42 - 1.1775 <br /> = 8.2425</div>

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