# Yahoo Web Search

1. ### Hey i need to have some good examples of trigo ratios heights and distances!!?

...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. ### Optimization problem?

... 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. ### Calculating a running track ... its been ages since ive done simple equations?

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. ### Calculus Problems.....I can't solve it :(?

...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. ### Calc Problem Help!?

...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. ### if the ends of things are fixed...when it expands just a little, why is there a huge buckle? why does it bow?

...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. ### Word problems and explanations?

...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. ### Factoring ax^2+bx+c?

... * 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. ### eachlaneonmynew track is 1.5 meters wide.theinside radius of lane 3 is 42.5 inches.howmuchlongeris L .5 thenL3

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. ### What is the maximum area?

...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