Follow the Rules for Working with Measurements $R$ Value of Insulation Is Given by the Formula

question 48

Multiple Choice

Follow the rules for working with measurements. The $R$ value of insulation is given by the formula $R = \frac { L } { K }$ , where L is the thickness of the insulating material and K is the thermal conductivity of the material. Find the R value of $18 \mathrm { in }$ of mineral wool insulation. K = 0.026. Note:L must be in feet.

• A) \(R = 5.6\)
• B) \(R = 63\)
• C) \(R = 59\)
• D) \(R = 58\)
• E) \(R = 57\)

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