To find a surface area you have to use this formula: SA=2lw+2lh+2wh or SA=2(lw+lh+wh) they are the same thing. l=length w=width h=height. So when you plug in your numbers for this using the first formula I showed it should look like this: SA=2x5x3+2x5x2+2x3x2 if you solve that then you should get your answer! Or you could use the other formula: SA=2(5x3+5x2+3x2) you should also get the same surface area as the first formula when you use this one. Let me know if this helped! Could you mark brainliest by any chance? Thank you! Also when you put your answer you need to wire it as whatever your number is with inches cubed since your surface area has inches. An example is if the answer was 48 you would write it as 48in with an exponent of three. 48 is not the answer and inches do not apply to all of surface areas.
