Answer
2.8 mi
Work Step by Step
a)
distance
$= \sqrt (6.38\times 10^{6} +1.6)^{2} - (6.38\times 10^{6})^{2}$
$\approx$ 4518.4071 m
$\approx$ 4518.4 m
b)
distance
= $4518.4071\; m \times \frac{1\; mi}{1609\; m} $
$\approx$ 2.8 mi
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