Subject: mathqa
Question: the two lines y = x and x = - 4 intersect on the coordinate plane . if z represents the area of the figure formed by the intersecting lines and the x - axis , what is the side length q of a cube whose surface area is equal to 6 z ?
Option: 
A: q = 2 √ 2
B: q = 16
C: ( √ 2 ) / 3
D: q = 8
Answer: A