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AP/AD = AH/AK = PH/DK

PA = 60 - 45 = 15

15/60 = PH/11
Ph = ( 15*11)/60 = 2.75 cm

KA² = DA² - DK²
KA² = 60² - 11²
KA² = 3479
KA = √3479 = 1.002 cm