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AB =
PB = AB/2 =
PB = PC
Luas Segitiga PBC =
cmiiw
kalau diperhatikan, luas daerah yang diarsir memotong persegi 1/4-nya, jadi
luas persegi kecil = 1/4 * 8 * 8
= 2 * 8
= 16 cm²