Question

A vertical stack of 20 identical coins is measured with a ruler. The markings on the ruler that coincide with the
top and bottom of the pile are 7 cm and 17.5 cm, respectively. What is the thickness of each coin?

Answer 1

Answer:

Total height of the stack is:-

17.5 - 7 = 10.5

Now, thickness of each coin will be-

$\frac{height \: of \: stack}{no \: of \: coins}$

$\frac{10.5}{20}$

= 0.525cm

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Answer 2

Answer:

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Explanation:

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