Answer:
1,216,747,567 square feet.
Explanation:
The area of a circle can be calculated as:
[tex]A=\pi\cdot r^2[/tex]Where π is 3.14 and r is the radius of the circle.
Since we need the answer in square feet, we first will convert 6 km to ft. So, if 1 km is equivalent to 3280.84 ft, we get:
[tex]6\operatorname{km}\times\frac{3280.84\text{ ft}}{1\operatorname{km}}=19685\text{ ft}[/tex]Therefore, replacing π is 3.14 and r by 19685 ft, we get that the area of the circle is equal to:
[tex]\begin{gathered} A=3.14\cdot(19685ft)^2 \\ A=1,216,747,567ft^2 \end{gathered}[/tex]So, the answer is:
1,216,747,567 square feet.