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= 1/3 x (18x18) x15
= 1620 cm3
luas prmukaan = luas alas + 4 (luas sisi tegak/segitiga)
= (18x18) + 4(1/2x18x15)
= 324 + 540
= 864 cm2
= 1/3 x (18x18) x15
= 1620 cm3
luas prmukaan = luasa + 4 (luas sisi tegak/segitiga)
= (18x18) + 4(1/2x18x15)
= 324 + 540
= 864 cm2