The diameter of a circle was

Question

15
15 cm and the diameter of the final circle was
12.75
12.75 cm. What is the scale factor?

Answer 1

To find the scale factor between the two circles, you can divide the diameter of the final circle by the diameter of the original circle.

Here are the steps:

1. Original circle diameter: 15 cm
2. Final circle diameter: 12.75 cm

Now, calculate the scale factor:

\[ \text{Scale Factor} = \frac{\text{Final Circle Diameter}}{\text{Original Circle Diameter}} = \frac{12.75 \text{ cm}}{15 \text{ cm}} \]

\[ \text{Scale Factor} = \frac{12.75}{15} = 0.85 \]

Therefore, the scale factor is 0.85.