The shelf has 40cm long.how many books of width 2cm can stand on the shelf
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1cm = 10 mm
45cm = 450mm
width of bookshelf = 450mm
width of book = 9mm
total book can be put = 450 divide 9
= 50 books ans
45cm = 450mm
width of bookshelf = 450mm
width of book = 9mm
total book can be put = 450 divide 9
= 50 books ans
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