A homeowner purchases insulation for her attic rated at R-15. She wants the attic insulated to R-30. If the insulation she purchased is 10 c

Question

A homeowner purchases insulation for her attic rated at R-15. She wants the attic insulated to R-30. If the insulation she purchased is 10 cm thick, what thickness does she need to use

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Mít Mít 5 years 2021-08-10T01:01:07+00:00 1 Answers 48 views 0

Answers ( )

  1. Vodka
    0
    2021-08-10T01:02:24+00:00
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    Answer:

    she need to use 20 cm thick

    Explanation:

    given data

    wants the attic insulated = R-30

    purchased = 10 cm thick

    solution

    as per given we can say that

    10 cm is for the R 15

    but she want for R 30

    so  

    R 30 thickness = \frac{30}{15} \times 10  

    R 30 thickness = 20 cm

    so she need to use 20 cm thick

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