The scale factor 1.75 should be used to make an enlarged version that has dimensions 21 cm by 28 cm.
Given that,
A cookbook has dimensions 12 cm by 16cm,
We have to determine,
What scale factor should be used to make an enlarged version that has dimensions 21 cm by 28 cm.
According to the question,
Scale factors are closely related to the concepts of ratio and proportions. In ratio and proportions, we multiply or divide a given amount to form a new quantity.
To determine the scale factor calculation be done in a single unit, following all the steps given below.
The scale factor should be used to make an enlarged version that has dimensions 21 cm by 28 cm is,
[tex]= \dfrac{12}{21}\\\\= 1.75[/tex]
Hence, Scale factor 1.75 should be used to make an enlarged version that has dimensions 21 cm by 28 cm.
To know more about Scale factors click the link given below.
https://brainly.com/question/16902197
