Answer:
The answer is 51,200 in².
Step-by-step explanation:
(4x40)x(8x40)=51,200
Answer:6
If you were to multiply 6*6*6 you would get 216
We can employ a simple repeated decimal trick:
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Alternatively, we can compute the partial sum of the series.
As , the second term vanishes and we're left with . Notice that this is really just a more formal version of the earlier trick.