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Lo = 3.14x4x4=50,24
2Lsegitiga=2 x 1/2 x 8 x 4=32
Lbyngn 192-50,24-32=109,76
2. 4Lpersegi=4x(20x20)=4x400=1600
4Llingkaran =4x(3,14x10x10)=4x314=1256
Lbyngn =1600-1256=344