a= 2S/b
b= 2A/asin(a)
x= y²/16,3
4x-5y=8
4x+20y=40
-25y= -32
y= 1,28
x= 3,6
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a= 2S/b
b= 2A/asin(a)
x= y²/16,3
4x-5y=8
4x+20y=40
-25y= -32
y= 1,28
x= 3,6