D= 9/2d
D+d=66
d=66-D
D=9/2(66-D)
11/2D=297
D=54
d=66-54
d=12
Area= 12•54/2Area= 324
Area rettangolo= 5/4(324)
Area rettangolo= 405
base rettangolo 405/25= 16.2
2p= (16.2•2)+(25•2)
2p= 82.4
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