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How many variables are required to prepare form class volume tables ?

  • A.One
  • B.Two
  • C.Three
  • D.All of the above

Answer: C

Form class volume tables need three variables.

A form class volume table gives tree volume in terms of diameter at breast height, total or merchantable height, and form class (a measure of stem taper such as the form quotient). Adding form as a third variable makes the table usable over a wider range of tree shapes.

A local volume table uses only diameter (one variable), and a general or standard volume table uses diameter and height (two). 'All of the above' does not apply.

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