allery30 மீ 20 மீ தோட்டத்தைச் சுற்றி ஒரு சீரான வெளிப்புறப் பாதை 216 மீ²; அதன் அகலம்?
A3 m
B1 m
C4 m
D2 m
Answer & Solution
Correct answer: D. 2 m
அகலம் xக்கு, (30 + 2x)(20 + 2x) - 600 = 216 கொடுக்கிறது (x - 2)(x + 27) = 0, எனவே x = 2 மீ.
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