AMC8 1995 Problem 6

Past Contests AMC8 AMC 8 - 1995
1

Figures I, I I and I I I are squares. The perimeter of I is 12 and the perimeter of I I is 24 . The perimeter of I I I is
Image
Answer Choices
A. 9
B. 18
C. 36
D. 72
E. 81