A triangular lot ABC have side AB = 400 and angle B = 50°. The lot is to be segragated by a dividing line DE parallel to BC and 150 m long. The area of segment BCDE is 50,977.4 m². a) Calculate the area of lot ABC, in aquare meter. b) Calculate the area of lot ADE, in square meter. c) Calculate the value of angle C, in degrees.

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