Questions 11 and 12 refer to the following figure. 15 B D 30 C 11. What is the perimeter of AABC? (A) 48 (B) 48 + 12V2 2 ( 1 + w) (C) 48 + 12V3 (D) 72 (E) It cannot be determined from the information given. 12. What is the area of AABC? (A) 108 bh (B) 54 + 72 V2 (C) 54 + 72V3 (D) 198 (E) It cannot be determined from the information given. Part B: Make sure to answer ALL of the following questions. YOU MUST SHOW YOUR WORK! (10 marks) If (4+1)? = a+bi, what is the value of a + b? 1. 16 +8i + 1 = at bi 16 + 8 ( - 1 ) + ( - 1 ) = atbi atbi = 7 2. If the expression 3 -1 ; is rewritten in the form 1-2i at bi, in which a and b are real numbers, what is the value of a+b