The answer is: " 6.4 blocks " .
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3.2 blocks (one way), PLUS: 3.2 blocks the other way:
3.2 + 3.2 = 6.4 blocks .
or: (3.2) * 2 = 6.4 blocks .
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Answer:
3c^2a is the GCF
2 multiplyed + 3.