If you are using the red brick which are 4" x 8" you will need 4.5 bricks per square foot (just call it five.) 5 x 400 is 2000 bricks.
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∙ 11y ago400 sq. miles = 27,878,400 sq. ft. x 100 = 2,787,840,000 sq. ft.
It depends on the size of the bricks and their orientation.
648
12
A "45-ft vegetable garden" seems to be so skinny that perhaps it could be surrounded by a single row of 90 bricks.
Impossible. An area cannot equal a volume. 400 ft^3 = X ft^2 * Y ft You need to decide on a Y to make an equality.
It depends on the size of the bricks.
400 sq. miles = 27,878,400 sq. ft. x 100 = 2,787,840,000 sq. ft.
1.377
4 bricks
It depends on the size of the bricks and their orientation.
648
92
12
169''9
400 ft = 0.07578 miles (1 mile = 5280ft)
A "45-ft vegetable garden" seems to be so skinny that perhaps it could be surrounded by a single row of 90 bricks.