It is 12*2.54 = 30.48 cm or about 30 cm.
12 cm = 4.72 inches
12 cm is about 4.724" (0.3937 inches per cm).
About 4.7 inches
Four cm is about 1.574 inches (cm x 0.3937 = inches).
22
2.32 inches = 70.7136 cm
99 inches is 251.46 cm
6 cm is 2.36 inches
165.5 cm is 65.15748 inches.
76.5 cm is 30.11811 inches.
178 cm is 70.0787 inches.