Math, asked by touheed54, 10 months ago

give me the answer of question number 5 part number 2nd and part number 4thplzzzzz​

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Answered by pari2001
1

Answer:

5(ii) \: for \: 12 \: books \\ thickness \: for \: 1 \: book = 20mm \\ thickness \: for \: 12 \: books = 20 \times 12 \\  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  = 240mm  -    - (i) \\ for \: 10 \: books \\ thickness \: for \: 1 \: book =  150mm \\ thickness \: for \: 10 \: books = 10 \times 1500 \\ \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:   = 1500mm -  - (ii) \\ by \: adding \: (i) \: and \: (ii) \\ total \: thickness = 240 + 1500 \\  \:   \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \: = 1740mm \: or \: 1.74m

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