gambar diatas gabungkan antara persegi dan persegi panjang a hitunglah keliling dan luas
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K=15+2,5+2,5+3+3+7,5+7,5+9
K=50cm
Lpp¹=p×l
Lpp¹=2,5×15
Lpp¹=37,5cm²
Lpp²=p×l
Lpp²=9×7,5
Lpp²=67,5cm²
LppG=Lpp¹+Lpp²
LppG=37,5+67,5
LppG=105cm²
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