A. v.kubus = s×s×s
= 6×6×6
= 216
b. v.kubus = s×s×s
= 5,6×5,6×5,6
= 175,616
c. v.kubus = s×s×s
= 34×34×34
=39304
All of the statements except the first are true whether p ║ q or not.
The appropriate choice is ...
... ∠2 ≅ ∠6
_____
The "corresponding angles postulate" tells you that the lines are parallel if the corresponding angles are equal.
Well... the segment FG = 4x + 3, the segment GH = 7x - 12, now, the
segment FH = FG + GH, those two fellows added up, and we know that FG and GH are both equal halves because G is the midpoint.
thus, FG = GH
or

and fairly sure, you know how much that is.