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Verified answer
Luas persegi = s²10×10 = 100cm²
ada 2 bangun trapesium
t = 5cm
sisi sejajar = 5cm dan 10cm
maka
2×½(jumlah sisi sejajar)×t
2×½(5+10)×5 = 75cm²
luas daerah arsir = 75cm²
luas daerah yg tidak diarsir = 100-75 =25cm²
semoga membantu