Chapter 8.2, Problem 26E

(a)

To determine

To find: The total length that plane flew.

Answer to Problem 26E

The total length plane flew by plane is $1883\text{miles}$ .

Explanation of Solution

Given information: The required data given in the figure:

  

Calculation: The total length that plane flew is $AC=AB+BC$ .

Hence, from the figure,

  $\begin{array}{l}AC=AB+BC\\ \therefore AC=1282+601\\ \therefore AC=1883\text{miles}\end{array}$

(b)

To determine

To find: The speed of the plane in miles per hour.

Answer to Problem 26E

The average speed of the plane is $50\text{miles/hour}$ .

Explanation of Solution

Given information: It is been given that $38\text{hours}$ plane remains in air.

The required data given in the figure:

  

Formula used: $\text{Speed}=\frac{\text{distance}}{\text{time}}$

Calculation: The total length that plane flew is $AC=AB+BC$ .

Hence, from the figure,

  $\begin{array}{l}AC=AB+BC\\ \therefore AC=1282+601\\ \therefore AC=1883\text{miles}\end{array}$

Apply the formula, $\text{Speed}=\frac{\text{distance}}{\text{time}}$

  $\begin{array}{l}rate=\frac{1883\text{miles}}{\text{38}\text{hours}}\\ =49.55\text{miles/hr}\\ \approx 50\text{miles/hour}\end{array}$