Solution: Forestry The Doyle Log Rule is one of several methods used to determine the

Chapter 13, Problem 75

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The Doyle Log Rule is one of several methods used to determine the lumber yield of a log (in board-feet) in terms of its diameter d (in inches) and its length L (in feet). The number of board feet is

\(N(d, L)=\left(\frac{d-4}{4}\right)^{2} L\)

(a) Find the number of board feet of lumber in a log 22 inches in diameter and 12 feet in length.

(b) Find N(30, 12).

Text Transcription:

N(d, L) = (d - 4 / 4)^2 L

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