Q. The area of a square is 40.5 cm². Find the length of its diagonal (in cm).
A) 4.5
B) 9
C) 13.5
D) 18
✔ Correct Answer: 9
Exam Insight
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A) 4.5
B) 9
C) 13.5
D) 18
✔ Correct Answer: 9
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