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= 16.15
= 240CM PERSEGI
= √225 + 64
= √289
= 17 cm
luas Δ = 16 x 17 :2
= 136 cm²
luas alas = 16 x 16 = 256 cm²
Luas permukaan = L alas + (4 x luas Δ)
= 256 + (4 x 136)
= 256 + 544
= 800 cm²