-3x = -3 because you would multiply one of the equations by -1 to eliminate y.
The third one down is the correct answer. (-55 and 1)
The answer for the exercise is the third option, which is: Hexagon.
The explanation is shown below:
As you can see in the figure attached, the cross section is a polygon of six sides and six angles. Therefore, it has six vertexes. In geometry, this type of polygon is known as "Hexagon".
25365cm÷100=m
=253.65m
25365 is less than 30m
