Without using the law of cosines, explain why it is impossible to construct a triangle with lengths $8.6 \mathrm {~cm} , 11.8$ $\mathrm { cm }$, and $21.9 \mathrm {~cm}$.

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The Answer of Without using the law of cosines, explain why it is impossible to construct a triangle with lengths $8.6 \mathrm {~cm} , 11.8$ $\mathrm { cm }$, and $21.9 \mathrm {~cm}$.

Without Using the Law of Cosines, Explain Why It Is 8.6 cm,11.88.6 \mathrm {~cm} , 11.88.6 cm,11.8

Without Using the Law of Cosines, Explain Why It Is $8.6 \mathrm {~cm} , 11.8$