Can someone tell me the answer step by step about the surface area i really need

What you have to do is find the sume of all of the areas of the rectangles in this rectangular prism.

Lets find the front and back first.

9in * 14in = 126 in^2
9in * 14in = 126 in^2
                =  252 in^2

Now for the top and bottom.

3in * 14in = 42 in^2
3in * 14in = 42 in^2
                = 84 in^2

And now for the left and right
9in * 3in = 27 in^2
9in * 3in = 27 in^2
              = 54 in^2

Finally we can add them all together!
252 in^2 + 84 in^2 + 54 in^2= 390 in squared.

2.) is the most sense