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Measuring Length and Zero Error

Ten similar c...

Question

Ten similar coins were stacked one above the other. When measured with a scale, the readings at the top and bottom were 1.5 cm and 4.0 cm respectively. What is the thickness of each coin?

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Solution

Total thickness of 10 coins = 4.0 cm – 1.5 cm
= 2.5 cm

Therefore, thickness of each coin = 2.5 cm ÷ 10
= 0.25 cm

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