Two. 12, 60, 14, 70, 19, 95, 2 1, 105.

Third, right and wrong, wrong and wrong.

Fourth,

1. Solution: 108÷4=27 (cm)

The side length of a square is 27 cm.

2. What is the circumference of each figure below? Fill in the () at the bottom of the chart (the side length of each small square represents one centimeter).

(16) cm (24) cm (26) cm