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The front and back covers of a textbook are each 0.3 cm thick . Between the covers are 200 sheets of paper , each 0.008 cm thick . How high is a stack of 10 books?

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Given the thickness of the textbook covers and the sheets of paper between them, the height of 10 stacked books is 22 cm.

How high is a stack of 10 books?

Given the data in the question;

  • Height of front cover of a book = 0.3cm
  • Height of back cover of a book = 0.3cm
  • Height of a sheet of paper between the cover = 0.008cm
  • Number of papers between the cover = 200
  • Height of 10 stacked books = ?

First we determine the height one book.

Height of one book =  Height of two covers + Height of 200 sheets of paper between the cover.

Height of one book = ( 0.3cm + 0.3cm ) + 200( 0.008cm )

Height of one book = 0.6cm + 1.6cm

Height of one book = 2.2cm

Now, height of 10 stacked books will be;

H = 10 × 2.2cm

H = 22cm

Given the thickness of the textbook covers and the sheets of paper between them, the height of 10 stacked books is 22 cm.

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