total farmland area = 954,000,000 acres

total land area = 3537000 square miles = 3537000 mi^{2}

Calculate the area of U.S. farmland in square miles (mi^{2}):

1 acre = 43560 ft^{2}

1 mi = 5280 ft

$\mathbf{954000000}\mathbf{}\mathbf{acre}\mathbf{\times}\frac{\mathbf{43560}\mathbf{}{\mathbf{ft}}^{\mathbf{2}}}{\mathbf{1}\mathbf{}\mathbf{acre}}\mathbf{\times}{\mathbf{\left(}\frac{\mathbf{1}\mathbf{}\mathbf{mi}}{\mathbf{5280}\mathbf{}\mathbf{ft}}\mathbf{\right)}}^{\mathbf{2}}\phantom{\rule{0ex}{0ex}}\mathbf{954000000}\mathbf{}\overline{)\mathbf{acre}}\mathbf{\times}\frac{\mathbf{43560}\mathbf{}\overline{){\mathbf{ft}}^{\mathbf{2}}}}{\mathbf{1}\mathbf{}\overline{)\mathbf{acre}}}\mathbf{\times}\frac{\mathbf{1}\mathbf{}{\mathbf{mi}}^{\mathbf{2}}}{\mathbf{27878400}\mathbf{}\overline{){\mathbf{ft}}^{\mathbf{2}}}}$

**= 1490625 mi**^{2}

Calculate the percentage of U.S. land that is farmland:

Total U.S. farmland occupies 954 million acres.

Total U.S. land area is 3.537 million square miles. What percentage of U.S. land is farmland?

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