title: Area Of A Hexagon
signature: areaOfAHexagon :: Double -> Double
  areaOfAHexagon s = 
test_code: import Text.Printf
  import Control.Exception (catch, SomeException)
  import Data.Typeable
  import qualified Data.List as List
  import qualified Data.Map as Map
  import qualified Data.Set as Set
  
  -- SOLUTION CODE
  -- ============================================
  
  PLACEHOLDER_CODE_BODY
  
  -- TESTING CODE 
  -- ============================================
  validateSolution :: Double -> Double -> Bool
  validateSolution actual expected = do
      (abs (actual-expected)) < 1e-09
  
  driver :: Double -> Double -> String
  driver s expected = do
      if (validateSolution (PLACEHOLDER_FN_NAME s) expected)
          then "PASSED"
      else "FAILED"
  
  main = do
      printf "TEST-0...%s\n" (driver (1772.6589509256596) (8163986.207300422) )
  
      printf "TEST-1...%s\n" (driver (-599.737107809315) (934487.9989101035) )
  
      printf "TEST-2...%s\n" (driver (1074.1765931782) (2997804.1448343466) )
  
      printf "TEST-3...%s\n" (driver (-1182.4087746714795) (3632345.696441302) )
  
      printf "TEST-4...%s\n" (driver (8083.035797247716) (169746524.38794258) )
  
      printf "TEST-5...%s\n" (driver (-6126.414356565494) (97513471.98905805) )
  
      printf "TEST-6...%s\n" (driver (5370.057504189614) (74922068.46663411) )
  
      printf "TEST-7...%s\n" (driver (-6947.020794285176) (125386010.4299519) )
  
      printf "TEST-8...%s\n" (driver (2110.5107873533325) (11572495.990484647) )
  
      printf "TEST-9...%s\n" (driver (-6458.751326919488) (108379966.88267714) )
  
source_py: def area_of_a_hexagon(s):
      return (((3 * math.sqrt(3)) * (s * s)) / 2)
source_cpp: double area_of_a_hexagon(double s) {
    return ( ( 3 * sqrt ( 3 ) * ( s * s ) ) / 2 );
  }