Problem
I have enlarged your picture to length \( 17 \mathrm{~cm} \). If the length of the original image is \( 3.4 \mathrm{~cm} \) Its width is \( 1.6 \mathrm{~cm} \) What is the perimeter of the enlarged image in
Solution
Step 1 ：\text{Step 1: Calculate enlargement scale}= \frac{17}{3.4}
Step 2 ：\text{Step 2: Calculate enlarged width}= 1.6 \times \frac{17}{3.4}
Step 3 ：\text{Step 3: Calculate perimeter}= 2(17 + 1.6 \times \frac{17}{3.4})
