Respuesta :

Answer:

1600

Step-by-step explanation:

Answer:

  • 1600

Step-by-step explanation:

Let the number be x:

  • √x = x/40
  • (√x)² = (x/40)²
  • x = x²/1600
  • x²/x = 1600
  • x = 1600

0 is also a solution but we need positive integer, so its 1600