# Chapter 1 - Introduction and Mathematical Concepts - Problems - Page 21: 20

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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