allery30 ਮੀਟਰ ਗੁਣਾ 20 ਮੀਟਰ ਬਾਗ ਦੇ ਆਲੇ-ਦੁਆਲੇ ਇੱਕ ਸਮਾਨ ਬਾਹਰੀ ਰਸਤਾ 216 m² ਨੂੰ ਕਵਰ ਕਰਦਾ ਹੈ; ਇਸ ਦੀ ਚੌੜਾਈ?
A3 m
B1 m
C4 m
D2 m
Answer & Solution
Correct answer: D. 2 m
ਚੌੜਾਈ x ਲਈ, (30 + 2x)(20 + 2x) − 600 = 216 ਦਿੰਦਾ ਹੈ (x − 2)(x + 27) = 0, ਇਸਲਈ x = 2 ਮੀਟਰ।
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