Mathematics
NULL
Medium
Question
Find the diagonal of a rectangle with area 120 m² and perimeter 46 m.
A
15 m
B
16 m
C
17 m
✓ Official correct answer
D
20 m
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A
15 m
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B
16 m
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C
17 m
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D
20 m
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Explanation
l + b = 23, lb = 120 ⇒ l² + b² = 289 ⇒ diagonal = 17 m.