Harlencasioviz Harlencasioviz Technology and Home Economics Answered DIRECTIONS: COMPUTE THE NUMBER OF BOARD FEET OF LUMBER WITH THE FOLLOWING DIMENSIONS. SHOW YOUR SOLUTION. 1. 4" x 6" x 12" 2.6" x 2" x 10" 3.4" x 2" x 16" 4.4" x 12" x 8" 5. 2" x 6" x 18"