The $\sqrt { \widehat { s t r } } = 12 + 20 ($

question 12

Multiple Choice

The $\sqrt { \widehat { s t r } } = 12 + 20 ($ dia $)$ can be used to predict the breaking strength of a rope (in pounds) from its diameter (in inches) . According to this model, how much force should a rope onehalf inch in diameter be able to withstand?

• A) \(16 \mathrm { lbs }\)
• B) \(22 \mathrm { lbs }\)
• C) \(4.7 \mathrm { lbs }\)
• D) \(256 \mathrm { lbs }\)
• E) \(484 \mathrm { lbs }\)

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