RE: how much round up
FH nailed the answer.
i have a 15 gallon electric spray tank. it's attached to a 10.000 footboom with 6 nozzles that are calibrated for the output of the pump. it puts out 1.0 gallon per minute (it'll spray for 15.000 minutes). the spray swath is 11.000 feet.
i did the math. driving at 3.0000 mph for 15.000 minutes will cover 1.0000 acres. i know i'm exaggerating the figures with the zero's. but when i did my initial calculations, it worked out to exactly 43560 square feet covered by driving 3 mph with the 11 foot swath of the boom.
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