An analyst has to decide which of 3 chromatography columns would be the best to buy based on the column efficiency in terms of the height equivalent of the theoretical plate.

Column 1: L=2.44m, T_A= 9.55s, W_1/2= 3.25s

Column 2: L=3.00m and H = 0.09 m

Column 3: L=5.00m and H = 0.07 m

Calculate the height of the theoretical plate (m) for column 1, give your answer to 3 places after the decimal.