SOLUTION: how do you convert 20 cubic miles to cubic inches?

Question 184819: how do you convert 20 cubic miles to cubic inches?
Answer by HyperBrain(694) (Show Source): You can put this solution on YOUR website!
Note: 1 mi=5280 ft
_ 1 ft=12 in
Therefore, 1 mi=5280 x 12 in =63360 in
_ 1 mi³=(1 mi)(1 mi)(1 mi)=(63360 in)(63360 in)(63360 in)=254358061056000 in³
Solution:
20 mi³=20 (254358061056000 in³)=5087161221120000 in³
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