EF and FG are equal so EF would be 6.1
6.1+6.1=12.2
EG=12.2
John decides to reduce a shape one half of its original size. The square that he had originally is 4 x 4. He reduces it so it will be 2×2
"0.32 with a line above it" could refer to two possible numbers, either

or

.
In either case, 0.32 will be the smaller of the two numbers simply because it terminates with two digits after the decimal point, while the others keep going, basically adding a small positive number to 0.32.
It's so easy just keep on reading it
1.26cm/1ft * 30ft = 37.8cm
37.8cm/6.3cm=6
Your model would be six toothpicks tall.