As given in the picture, the formula for a cube's surface area is

, which s is the length of one side of the cube. So let's solve:
Answer:
12 over 15 and 1 over 15 i think
Step-by-step explanation:
Think it's 4 because 5 factors and only number with 5 factors is 4 :p
The answer would be 9 you would add the 13 and 7 then have 20-5t=-25 then subtract 20 from 25 then you would have -5=-45 which is 9