Question 1208239
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Answer: <font color=red>20,000 meters</font>



Work Shown


10 million = 10*(1 million) 
= 10*10^6 
= 10^1*10^6 
= 10^(1+6) 
= 10^7
In short, 10 million = 10^7.
Or put another way, 10 million = 10,000,000 = 1 followed by 7 zeros. The exponent tells us how many zeros are tacked onto the 1.


a = 2*10^(-3) = length of one ant in meters
b = 10^7 = number of ants
c = a*b = total length, in meters, of that number of ants assuming no gaps or overlaps. 
We also assume the ants form a straight line. 


c = a*b
c = 2*10^(-3)*10^7
c = 2*10^(-3+7)
c = 2*10^(4)
c = 2*10,000
c = <font color=red>20,000 meters</font>



Notes:<ul><li>I used the exponent rule a^b*a^c = a^(b+c).</li><li>20,000 meters = 20 kilometers</li><li>20 kilometers = 12.4274 miles approximately</li><li>20 kilometers = 6,5616.7979 feet approximately</li><li>2*10^(-3) meters = 0.002 meters = 2 mm</li></ul></font>