Answer:
a. 4000 ft^2 = 176.36 yd^2
b. 10^9 yd^2 = 1,624,083.9 mi^2
c. 13 mi^2 = 144.355 acres
d. 2 acres = 144,355 ft^2
Explanation:
In the question, you were asked to convert certain units into other units.
a. 4000 ft^2 (4000 square feet) is equal to 176.36 yd^2 (176.36 square yards), because 1 yd^2 = 1.057 ft^2.
And its the same for the rest of them!