find the missing dimension of the following area of the irregular figures

Pa Heart and Brainliests
Pa Heart and BrainliestsThank you <3
Answer:
1. 9cm
2. 20cm
3. 25dm
Step-by-step explanation:
Area = LW
For 1:
108 = 12W
W= 108/12
W = 9
For 2
400 = 20W
W= 400/20
W = 20
For 3
200 =L8
L = 200/8
L= 25