Since we are multiply 3.75km by 1.4km, our product will have to be translated into acres afterwards. 3.75 x 1.4 = 5.25 km. 1 km = 247.105 acres. Multiply 247.105 by 5.25 to get the total acres. 247.105 x 5.25 = 1297.301 Your answer is 1,297.301 acres. I hope this helps!