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Vlad [161]
3 years ago
11

The age of the Earth is 4.54 billion years old. The circumference of the Earth is 40,074km. The diameter of a penny is 1.9cm. On

e penny represents one year of time. How many pennies would you need to represent the age of the Earth. Express your answer as a full number with units in "pennies", no spaces
Geography
1 answer:
Arisa [49]3 years ago
3 0

Answer:

If a penny represents one years, 4.54 billion pennies are needed to represent the age of the Earth.

Explanation:

The equivalent number of pennies is the age of the Earth divided by the age of a penny. That is:

n = \frac{4.54\times 10^{9}\,years}{1\,\frac{year}{penny} }

n = 4.54\times 10^{9}\,pennies

If a penny represents one years, 4.54 billion pennies are needed to represent the age of the Earth.

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