Respuesta :

D. 56.25
(6 x 12)/2 = 36 cm2; Area of triangle ABC
If EF=4.5, than ED=9, because EF and ED have the same proportions as BC and AB. So area of EFD = (4.5 x 9)/2  = 20.25
ABC + EFD = 56.25

the answer is D

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