I couldn't able to understand ur question , give an example problem
20 cm^2. Type in 20.
2*4 makes 8 divided by two makes 4. There are four sides so do 4*4 to make 16. 2*2 for the middle to make 4. 16+4 makes 20 cm^2
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Answer:

Step-by-step explanation:
x = 10
x = 20 / 2
x = 4*5 / 2