SOLUTION: if a varies directly as the cube of c, and a = 18 when c = 30, find a when c = 6.

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Question 405474: if a varies directly as the cube of c, and a = 18 when c = 30, find a when c = 6.
Answer by ewatrrr(24785) About Me  (Show Source):
You can put this solution on YOUR website!


Hi

   a = k(c^3)  |where k is the constant of the direct variation

  18 = k(30^3)

  18/27000 = .00067



   a = .00067(6^3)= .1447