Tolong jawab ya pakai cara ya... no.27

27.
luas = 2(p×l) + 2(l×t) + 2(p×t)
luas = 2(10×5) + 2(5×6) + 2(10×6)
luas = 2(50) + 2(30) + 2(60)
luas = 100 + 60 + 120
luas = 280 cm2 (jawaban A)