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Three rope pieces have lengths 4, 6 and 11 metres. Can they form a triangle?
AYes, exactly one
BYes, infinitely many
CDepends on angle
DNo, since 4 + 6 < 11
Answer & Solution
Correct answer: D. No, since 4 + 6 < 11
Triangle inequality: any two sides must sum to more than the third. 4 + 6 = 10 < 11, violating the inequality. No triangle possible.
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