Chapter 0, Problem 24PR

To determine

To evaluate: the width of the enlarged image.

Answer to Problem 24PR

The width of the enlarged image is 7.2 inches.

Explanation of Solution

Given information:

It is given that a photo that is 3 inches wide by 5 inches long is being enlarged so that it is 12 inches long.

Let the width of the enlarged image be ‘x’.

It is understood that enlarged image and actual image are similar,

So, the ratio of their sides is equal,

  $\begin{array}{c}\frac{3}{5}=\frac{x}{12}\\ x=\frac{12\times 3}{5}\\ =7.2\text{inches}\end{array}$

So, the height of the actual painting is 7.2 inches.