Chapter 10, Problem 18P

Using the information given in Table 10.4, determine the ratio of local pressure and density to sea-level values. Estimate the value of air density at the cruising altitude of most commercial airliners.

Altitude (m)	$\frac{\rho }{{\rho }_{sealevel}}$	$\frac{P}{P_{sealevel}}$
0 (sea level)
1000
3000
5000
8000
10,000
12,000
14,000
15,000