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There are about 3.2*10^7 seconds in every year. The earth is approximately 4.5*10^9 years old. (That's 4 and a billion years old!) Figure out approximately how old the earth is in seconds.

Answer :

3.2 x 10^7 = 32,000,000
4.5 x 10^9 = 4,500,000,000

32,000,000 x 4,500,000,000 = 1.44e17

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