Introduction to Dilation

Q. In which of the following transformations does the size of the object change?

1. Rotation
2. Reflection
3. Translation
4. Dilation

Q. Figure $1$ is dilated with a scale factor of $0.5$ about the origin to get figure $2$. The length of b is $2.95$ centimeters and the length of f is $1$ centimeter. The perimeter of figure $1$ is $7.62$ centimeters. Find the value of $d$.

1. $1.345$ cm
2. $1.335$ cm
3. $0.745$ cm
4. $2.345$ cm