Circle a has been enlarged to create circle b. circle a's circumference was 8. circle b has been enlarged to circumference 28. what scale factor was used to create circle b?

The scale factor 7:2 was used to create circle B.

Step-by-step explanation:

Given:

Circumference of Circle A = 8

Circumference of Circle B = 28

We need to find the scale factor which was used to create circle B.

Solution:

To Scale factor we will Divide Circumference of Circle B with Circumference of Circle A.

framing in equation form we get;

Scale factor =

Hence The scale factor 7:2 was used to create circle B.

pls ask

step-by-step explanation:

no, her answer is not correct.   we square the lengths of all sides and then determine whether the pythagorean theorem holds here:

9² + 15² = 306.   this is not equal to the square of the longest side ( that square being 395.   answer c is correct.