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= (14.14) + (4.1/2.14.24)
= 196+672 = 868
= √576 + 49
= √625
= 25 cm
Luas permukaan = L alas + 4.luas sisi miring
= (14x14) + 4(14x25/2)
= 196 + 700
= 896 cm² (B)
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