Answer:
Step-by-step explanation:
total length = 445 cm (A + B + C)
A = 45 + B
B = C/2
find A
A + B + C = AC
(45 + B) + (C/2) + C = 445
45 + C/2 + C/2 + C = 445
2C = 445 - 45
C = 400/2
C = 200
B = 200/2
B = 100
A = 45 + 100
A = 145
proof:
445 = 145 + 100 + 200
445 = 445 ----OK
