Answer:
1605 sq. feet.
Step-by-step explanation:
Farmer Jack has 1,800 square feet of garden space to have enough corn for a year.
Now, his garden space is currently [tex]10\frac{5}{6}[/tex] feet by 18 feet.
So, Farmer Jack currently has [tex](10\frac{5}{6} \times 18) = (\frac{65}{6} \times 18) = \frac{1170}{6}[/tex] sq. feet of garden.
Therefore, the land area that is more required to plant the rest of his corn will be [tex](1800 - \frac{1170}{6}) = \frac{10800 - 1170}{6} = \frac{9630}{6} = 1605[/tex] sq. feet. (Answer)