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Fresh day Oliverkoome@gmail254.Com., let's solve. 13. The figure ABCDEF represents a roof of a house. Given dimensions: AB = DC = 12 m BC = AD = 6 m AE = BF = CF = DE = 5 m EF = 8 m a) Calculate, correct to 2 decimal places, the perpendicular distance of EF from the plane ABCD. Let the plane ABCD be the xy-plane. Let A be at the origin (0,0,0). Then B is (12,0,0), C is (12,6,0), and D is (0,6,0). Let h be the perpendicular