alleryA uniform outer path around a 30 m by 20 m garden covers 216 m²; its width?
A3 m
B1 m
C4 m
D2 m
Answer & Solution
Correct answer: D. 2 m
For width x, (30 + 2x)(20 + 2x) − 600 = 216 gives (x − 2)(x + 27) = 0, so x = 2 m.
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