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Luas persegi= 16 x 16 = 256 cm²
tinggi segitiga tegak = √15²-8²= 17 cm
Luas segitiga tegak = 1/2 17 x 16 =136 cm²
Rumus= Luas persegi + 4Lsegitiga tegak
196 + 4 x 136
196 + 544 = 740 cm²