A Rule for Estimating the Number of Board Feet of Lumber

question 97

Multiple Choice

A rule for estimating the number of board feet of lumber that can be cut from a log depends on the diameter of the log. To find the diameter, \mathrm{d} , required to get 7 board feet of lumber, we use the equation $\left( \frac { d - 4 } { 4 } \right) ^ { 2 }$ =49 . Solve this equation for d. Are both answers reasonable?

• A) 32,-24 ; No, only 32 feet is a reasonable answer.
• B) 11,-28 ; No, only 11 feet is a reasonable answer.
• C) 24,-32 ; No, only 24 feet is a reasonable answer.
• D) 28,-28 ; No, only 28 feet is a reasonable answer.

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Definitions:

Thalamus

A structure in the brain that acts as a relay station for transmitting information between different areas of the brain.

Gonad

An organ in animals that produces gametes; testes in males and ovaries in females.

Adrenal

Referring to the adrenal glands or their function, which is to produce hormones like cortisol and adrenaline that help control stress, metabolism, blood pressure, and other vital functions.

Endocrine System

A network of glands and organs that produce, store, and secrete hormones to regulate the body's metabolism, growth, and development.