Answer: 918km^2
Step-by-step explanation:
[tex]area(a): 1700km^2\\percentage(p): 5.75 = \frac{5.75}{100}=0.0575\\years(y): 8[/tex]
Let x be the new dimension of the area;
[tex]x=a-(a*p*y)[/tex]
[tex]x=(1700km^2)-(1700km^2*0.0575*8)\\x=1700km^2-782km^2\\x=918km^2[/tex]