Chapter 8.4, Problem 50PPS

To determine

The total length of orange felt to be bought.

Answer to Problem 50PPS

  $495\text{inch}$

Explanation of Solution

Given:

The given figure is:

Calculation:

In the given triangle,

  $\begin{array}{l}\cos 70°=\frac{3.5}{x}\\ x=\frac{3.5}{\cos 70°}\\ x=10.23\end{array}$

The total perimeter of the pennant will be:

  $10.24+10.24+7=27.5\text{inch}$

The total length of orange felt to be bought will be:

  $18\times 27.5=495\text{inch}$