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Hoppus imperial and metric

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This older system of measurement was practiced in the UK and former British colonies. It was made popular in 1736, and it’s still used in Asia, Africa, South America and Oceania. It can be used both in the metric and imperial systems.

Imperial:

Hoppus ft³ via girth = (mid-girth in inches/4)² x length in feet / 144

NB! Round to the nearest tenth ft³

Hoppus ft³ via diameter = mid-diameter in inches² x length in feet x 0.004283

NB! Round to the nearest tenth ft³

Hoppus superficial feet = Hoppus ft³ x 12

Hoppus ton = hoppus ft³ / 50

Metric:

Hoppus m³ via girth = (mid-girth in cm/4)² x length in meters / 10.000

NB! Round to the nearest three decimal points

Hoppus m³ via diameter = mid-diameter in cm² x length in meters x 0.000061685

NB! Round to the nearest three decimal points

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