I believe you just have to draw 2 little lines in between AB and CD.
Answer:
1. -2
2. 21^2
Step-by-step explanation:
I got 16 but not 100% sure if it’s right
Sorry if it’s wrong, I tried my best
1.2 meters = 120 centimeters
amount of increase = 120-80 = 40 centimeters
40 ÷ 80 = 0.5 = 50%
There was a 50% increase.