11. If the thickness of a pile of 12 cardboard sheets is 35 mm, then the thickness of a pile of 240 sheets is O 70 cm O<

Question

11. If the thickness of a pile of 12 cardboard sheets is
35 mm, then the thickness of a pile of 240 sheets is
O
70 cm
O
80 cm
O
90 cm
O 100 cm​

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Parker 1 month 2021-08-16T11:43:32+00:00 1 Answer 0 views 0

Answers ( )

    0
    2021-08-16T11:45:10+00:00
    • Option (1) 70 cm is correct.

    Given :–

    • The thickness of a pile of 12 cardboard sheets = 35 mm.

    To Find :–

    • The thickness of a pike of 240 sheets.

    Solution :–

    First, we need to find the value of the thickness of a pile of a cardboard sheet.

    So,

    Given that,

    The thickness of a pile of 12 cardboard sheets = 35 mm.

    So,

    The thickness of a pile of a cardboard sheet =  \rightarrow \sf \dfrac{35}{12} \: mm

    Hence,

    The thickness of a pile of a cardboard sheet is  \rightarrow \sf \dfrac{35}{12} \: mm

    Now, we have to find the thickness of 240 cardboard sheets =  \sf \dfrac{35}{\cancel{12}} \times \cancel{240} \: mm

     \rightarrow \sf \dfrac{35}{\cancel6} \times \cancel{120} \: mm

     \rightarrow \sf \dfrac{35}{\cancel3} \times \cancel{60} \: mm

     \rightarrow \sf \dfrac{35}{1} \times {20}\: mm

     \rightarrow \sf {35} \times {20} \: mm

     \rightarrow \sf 700 \: mm

    Now, we have to convert mm to cm.

    We know that,

    • 10 mm = 1 cm

    So,

    For converting, we need to divide length value by 10.

    We have,

    • 700 mm.

    Now,

     \rightarrow \dfrac{70 \cancel0}{1 \cancel0}  \: cm

     \rightarrow70 \: cm

    Hence,

    The option (1) 70 cm is correct.

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