Mathematics
NULL
Medium
Question
The length of a rectangular plot is 4½ times its breadth. If the area is 200 m², what is its length?
A
25m
B
30m
✓ Official correct answer
C
44m
D
None of these
Community credibility
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A
25m
No member explanations yet for this option.
B
30m
No member explanations yet for this option.
C
44m
No member explanations yet for this option.
D
None of these
No member explanations yet for this option.
Explanation
l = (9/2)b and lb = 200 ⇒ (9/2)b² = 200 ⇒ b² = 400/9 ⇒ b = 20/3; l = 30 m.