If a pile of a dozen of buttons has a height of 2 cm 4mm what is the thickness of one button?
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Answer:
A dozen buttons = 12 buttons
Total thickness of 12 buttons = 2 cm 4 mm
= 2 × 10 mm + 4 mm
= 24 mm
Therefore. thickness of one button = 24 mm ÷ 12
= 2 mm
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