Respuesta :

Answer:

Forest area burned by the fire is 256000 acres.

Step-by-step explanation:

Use the unitary method to calculate the area of National park burned in acres.

Since, 1 square mile = 640 Acres

Therefore, 400 square miles = 640 × 400

                                                = 256000 acres

Hence, forest area burned by the fire is 256000 acres.