A rectangular solid has dimensions 3×4×5. What is the length of the space diagonal? A 5√2 B √50 C 12 D √41 ✓ Correct Answer: Option B Space diagonal = √(3²+4²+5²) = √(9+16+25) = √50 = 5√2. Practice GRE Exam Prep Quizzes → Browse All Questions Study Flashcards