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20 May, 22:55

Which of the following can be the side lengths of a triangle?

A:12,9,21

B:7,6,12

C:3,8,14

D:23,13,37

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  1. 20 May, 23:06
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    In a triangle the sum of two sides is always greater than the third side.

    A:12,9,21

    12+9 = 21

    21 = 21 ⇒ no

    B:7,6,12

    7+6 = 13

    13 > 12 ⇒ yes

    C:3,8,14

    3+8 = 11

    11 < 14 ⇒ no

    D:23,13,37

    23+13 = 36

    36 < 37 ⇒ no

    Answer: B:7,6,12
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