Question

Given a circle with measures of (C, d, and r) and a circle with measures of (C', d', and r'), what is C if
d/d' = 8 and C' = 1.5?
A) 4
B) 8
C) 12
D) 16

Answer 1

c'=1.5
c/c'=d/d'
c/1.5=8
c=12
hope that helps :)