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Trout Weight
The formula to calculate the weight for a trout that is 20 inches long and has a girth of 12 inches is as follows. Trout have a shape factor of 800 and a girth ratio of (.6).
WEIGHT = LENGTH x GIRTH² / SHAPE FACTOR
WEIGHT= 20 x (12²) / 800
WEIGHT= 20 x 144 / 800
WEIGHT= 2880 / 800
WEIGHT = 3.6 pounds
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