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  1. ...a). l = .16296, r = 12.587. (b). l = 1.3672, r = 1.2978. 5. Given the length of the arc l and the angle a which it subtends at..., the radius to the center line of the track being 2100 feet. If the...

    4 Answers · Science & Mathematics · 25/06/2008

  2. ... at least get you down the right track ! I hope you don't mind the...circle perimeter (circumference) = 2·π· r semicircle perimeter = circumference / 2 = (2·... top where circle is): 2· L + W = 2· L + (2· r ) area...

    2 Answers · Science & Mathematics · 07/05/2008

  3. 400 = 2.54 + 2 pi R + 0.6pi 397.46 = 2 pi R + 0.6 pi 397.46 = 2 pi R + 1.885 395.58 = 2 pi R 395.58 = 6.28318 R R = 395.58 / 6.28318 R = 62.95856 M

    2 Answers · Science & Mathematics · 10/04/2008

  4. ...perimeter = 2L + 2π r = 600 ---> L + π r = 300 L = length of straight track > = 200 r = radius of semicircular tracks ... = area = πr² + 2rL L + π r = 300 ==> 200 + π r = 300 r = 100/π...

    3 Answers · Science & Mathematics · 18/03/2008

  5. ...2*pi* r ) = 400 for L : 2L = 200/(pi* r ) L = 31.83/ r so we plug that into the original equation: (31.83/ r ... in mind the limitations on the track . Hope you can take it from here.

    2 Answers · Science & Mathematics · 16/04/2008

  6. ...up a little, its length will be L +D. At this point, it ... as an arc of a circle with radius R and center O. Let... be the two ends of the track , and let @ be the angle AOB in...

    2 Answers · Science & Mathematics · 31/03/2008

  7. ...5.) A rug is 74 years... Let the age of the rug be R , and let the age of the painting be P, since I don't know...

    6 Answers · Science & Mathematics · 08/03/2008

  8. ... * T) + ( R * Sx) = bx L = Last >> R * T = c You would have to keep...systematic and it is easier to keep track of, because you are working with less...

    1 Answers · Science & Mathematics · 18/02/2008

  9. if your track is circular then it would be 6pi if you go from the inside of 3 to the inside of 5 because 1.5 from 3 to 4 and 1.5 from 4 to 5 so 3 2pi( r ) is circumference so 2(3)pi 6pi

    1 Answers · Science & Mathematics · 15/02/2008

  10. ...field right? P = 2(pi) r + 2L You isolate and get: (pi) r = 150 - L r = (150- L )/(pi); So that's your radius, but if you have 2r, then...

    2 Answers · Science & Mathematics · 21/11/2007

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