640 square feet = 71.1 square yards.
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how many boxes of wood flooring would i need if there are 19.72 sq feet in a box to cover 640 sq feet of an area?
0.5 miles is bigger than 640 feet.
48% of 640 = 48% * 640 = 0.48 * 640 = 307.2
640
80% of 640 = 0.8 x 640 = 512