Answer:
3 plus 4. and 2 plus 1. or 4 plus 3 or 1 plus 2
Step-by-step explanation:
The answer is negative two I believe so if I’m right I’m not 100% sure on this one
To find surface area, you would find the area of each side of the shape. Since this is a cube, each side is a square. So area=side2, So each side is 9, so 9x9=81 for each face. There are 6 faces to a cube, so 6x81=486 in2 is your answer
Can you add on. What rational numbers are you referring to?