Respuesta :

wegnerkolmp2741o

Answer:

sqrt(65) = s

Step-by-step explanation:

The surface area of a cube is found by

SA = 6s^2  where s is the side length

390 = 6 s^2

Divide each side by 6

390/6 = 6s^2 /6

65 = s^2

Take the square root of each side

sqrt(65) = s