Assume a Rule That Is One of Several Methods Used $N ( d , L ) = \left( \frac { d - 2 } { 2 } \right) ^ { 2 }$

Multiple Choice

Assume a rule that 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 $N ( d , L ) = \left( \frac { d - 2 } { 2 } \right) ^ { 2 }$ . Find the number of board-feet of lumber in a log 28 inches in Diameter and $10 \text { feet in length. }$

A) 7,290 board-feet
B) 1,690 board-feet
C) 270 board-feet
D) 3,380 board-feet
E) 6,760 board-feet