1. Meimei forms a square with 36 cm long iron wire, and the square has an area of (8 1) square centimeters.

36/4=9 9*9=8 1

Lily made a rectangle with a width of 3 cm with 36 small squares with a side length of 1 cm. What is the length of this rectangle (15)?

36-3-3=30 30/2= 15

Cong Cong uses a 36-cm-long wire to form a rectangle, which is 4 square centimeters smaller than Lili's pendulum. The rectangle surrounded by Cong Cong is (16) cm long and (2) cm wide.

36/2= 18 36-4-32 32/2= 16 18- 16=2