Chapter 6.6, Problem 10PPS

(a)

To determine

The length of Roosevelt’s moustache on the monument.

Answer to Problem 10PPS

  $\text{20ft}$

Explanation of Solution

Given information:

Scale of the model is $1\text{in}=1\text{ft}$

Calculation:

Length of moustache on the model is $1\text{foot}8\text{inches}$ that is $20$ inches.

So, length of moustache on the monument will be $20\text{feet}$ .

(b)

To determine

The scale factor.

Answer to Problem 10PPS

  $1/12$

Explanation of Solution

Scale factor tells us the comparisons between two scales. It tells us how much a scale is greater or smaller than the other.

In this question, scale factor is given by $\frac{\text{Model scale(in)}}{\text{Monument scale(ft)}}=\frac{1}{12}$ ( $1$ foot is equal to $12$ inches)

(c)

To determine

The length of the Roosevelt’s face on the model.

Answer to Problem 10PPS

  $\text{5feet}$

Explanation of Solution

Given information:

Length of face on monument is $60$ feet.

Calculation:

Scale factor is $1/12$

So, length of face on the model is $\frac{1}{12}\times 60=5\text{ft}$ .