Geometry/Math

Two right circular cylinders have equal volume. The first cylinder has a radius of 6 inches and a height of 12 inches. What is the number of inches in the height of the second cylinder if its radius is 8 inches? Express your answer as a common fraction, without units.

  1. 7
asked by Amanda
  1. volume of 1st = π(36)(12) = 432π

    volume of 2nd = π(64)h

    64π h = 432π
    h = 432π/(64π)
    = 27/4

    posted by Reiny
  2. 27/4

    posted by kk
  3. Stop Cheating! We have message boards for a reason. :D sike

    posted by AoPS Admin
  4. Yes, please DO NOT cheat use the message board if you are in trouble or needing assistance.

    posted by AoPS Ashely Ahlin
  5. Ya Boi!

    posted by Ya Boi!
  6. Called Out!

    posted by Called Out!

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