Answer:
3
Step-by-step explanation:
to dilate is to divide or to make smaller.
when dilating by a factor of 6, take one of the measurements given which is 9 and divide it by 6.
9/6 = 3/2 = 1.5
1.5 is the new radius
the circumference formula is 2*pi*r or pi*d where 'd' is the diameter. without evaluating with pi, this is what you get:
2*pi*r
2*pi*1.5
3*pi
now 'n' equals 3
