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= √225 + 64
= √289
= 17 cm
luas sisi Δ = alas x tinggi :2
= 16 x 17 :2
= 136 cm²
luas alas = 16 x 16
= 256 cm²
Luas permukaan limas = L alas + (4 x L sisiΔ)
= 256 + (4 x 136)
= 256 + 544
= 800 cm²