Hello! i need help finding the value of x could somebody help?

X= 17

These are vertical angles since they are opposite angles made by two intersecting lines. And vertical angles are congruent so we would set them equal to each other.

6x-19 = 3x + 32

Subtract 3x from both sides.

3x - 19 = 32

To isolate 3x on one side add 19 to both sides.

3x= 51

Divide by 3 on both sides.

X = 17

The answer would be b ! explanation: the formula for sa *surface area * is 2×l×w+2×l×h+2×w×h so in this case l=4w=12h=8so you use the formula to solve it and it give you the answer of 352^cm^2