Volume of cube = ( side)^3
Side = 6 feet = 6×12 = 72 inches ( 1ft =12 inch)
Vol. = (72)^3 = 72×72×72= 373248 cubic inches
Answer: 60°
Step-by-step explanation: A straight angle is 180°
180°- 120° = 60°
4x-2=18
-2 on both sides
4x=16
divid by 4 on both sides
x= 4