The sides 4.1 cm, 8.4 cm, and 1.3 cm couldn't be the side lengths of a triangle because the sum of the two sides is not greater then the third side.
The shape made up by the three sides such that the sum of the two sides is greater then the length of the third side.
Here three lengths of the triangle are 4.1 cm, 8.4 cm, and 1.3 cm
[tex]4.1+1.3 < 8.4[/tex]
[tex]5.4 < 8.4[/tex]
So we can see that the sum of the two sides is less then the third side so the triangle can not be made.
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