Answer:
392 inches sq.
Explanation:
To find the surface area, find the area of all side first and then add them together at the end. Area = (length)(width)
The problem gives you the length, width, and height of the prism which is all you need to find the dimensions of each side.
The area of the side facing us would be (9)(14)=126 in. sq. There's two of these sides, one is just hidden. So we would do (126)(2)=252 in sq to get the total area of these two sides.
Moving on to the side on the side, we would do (3)(9)=27, then (27)(2)= 54 in sq.
The side on top would be (14)(3)=42 and then (42)(2)= 84 in sq.
Now, for the final surface area we would just add these all together! 252+54+84=392, so the surface area would be 392 in sq.
If you have any questions you can ask!