Respuesta :

Answer:

314.96

586.74

Step-by-step explanation:

Answer:314.96; 586.74

Step-by-step explanation:

1 inch = 25.4 millimeters

12.4 x 25.4 = 314.96

23.1 x 25.4 = 586.74

Multiply the number of inches by 25.4 to convert to millimeters :).