- A14 units
- B48 units
- C22 units
- D24 units
Step-by-Step Solution
AB = 2 − (−4) = 6, BC = 1 − (−7) = 8, right angle at B. AC = √(36 + 64) = 10. Perimeter = 6 + 8 + 10 = 24 units. (14 omits AC; 48 is twice the area.)
Answer: D) 24 units
Triangle ABC has A(−4, 1), B(2, 1) and C(2, −7). What is its perimeter?
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