The answer to the problem is A
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A reasonable estimate would be an estimate of 2.5 feet.
(4*1000) + (2*100) + (3*1/10) = <span>4200.3
</span>(4x1000) + (2x100) + (3x1/10) = <span>4200.3
</span>
Both are equal.
The square root of 50 is 7.071