# Chapter 1 - Section 1.8 - Multiplication and Division of Fractions - Exercise: 45

$19,600$ board feet

#### Work Step by Step

RECALL: Number of Board Feet = $\dfrac{\text{number of boards} \times \text{thickness} \times \text{width} \times \text{length}}{12}$ where thickness, width, and length are all in inches. Using the formula above. with 14 feet = 168 inches, gives: Number of Board Feet $\\=\dfrac{175 \times 1 \times 8 \times 168 }{12} \\=\dfrac{235,200}{12} \\=19,600$

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