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?
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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?
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Answer:
Total height of the stack is:-
17.5 - 7 = 10.5
Now, thickness of each coin will be-
[tex] \frac{height \: of \: stack}{no \: of \: coins} [/tex]
[tex] \frac{10.5}{20} [/tex]
= 0.525cm
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