Chapter 6.4, Problem 90E

Use Table 1 to evaluate all integrals involved in any solutions of Problems 71–94.

90. Pollution. The concentration of particulate matter (in parts per million) during a 24-hour period is given approximately by

$\begin{array}{cc}C\left(t\right)=t\sqrt{24-t}& 0\le t\le 24\end{array}$

where t is time in hours. Find the average concentration during the period from t = 0 to t = 24.