Question

What is the range of possible sizes for side x?

Answer 1

$\qquad\qquad\huge\underline{{\sf Answer}}♨$

The value of third side should be lesser than the the sum of other two sides ~

$\qquad \sf  \dashrightarrow \:x < 2.8 + 2.8$

$\qquad \sf  \dashrightarrow \:x < 5.6$

and, value of third side should also be greater than the difference of other two sides ~

$\qquad \sf  \dashrightarrow \: x> 2.8 - 2.8$

$\qquad \sf  \dashrightarrow \:x > 0$

Now, combine the two inequalities, we will get ~

$\qquad \sf  \dashrightarrow \:0 < x < 5.6$

I hope you got the required Answer ~