Circle B, with a radius of 15 units, is a dilation of circle A, with a radius of 9 units.

Select all the true statements.

(Select all that apply.)

目

The circumference of circle B is greater than the circumference of circle A by a scale factor of 2.

The ratio of the arc length and radius of circle A is less than the ratio of the arc length and radius of circle B.

The value of is equal to the value of a.

■

The angle marked a measures

5л

15 radians.

The angle marked measures

9

3т

radians.