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Verified answer
Sm = t∆ = √4^2+3^2 = √16+9 = √25 =5luas permukaan = (8x8)+(4x1/2x8x5)
=64 + 80
=144 cm2
good luck ;-)
luas alas . 4luas segitiga
= (8.8)(4.1/2.8.3)
= 64 (16.3)
= 64.48
= 3.072 cm2
maaf kalau salah