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= 24/4
= 6 cm
tinggi rusuk tegak =
= √73
luas permukaan = luas alas x luas selubung
= ( s x s ) + ( 4 x 1/2 x alas x tinggi)
= ( 6 x 6 ) + ( 4 x 1/2 x 6 x √73)
= 36 + 12√73