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sisi alas= 6 cm
t = 9 cm
maka :
Luas alas = sisi x sisi
= 6 x 6 = 36 cm
K alas = 4 x sisi
= 4 x 6 = 24 cm
Luas Permukaan =
Lp = L alas + 1/2 K alas x t
= 36 + 1/2 (24) x 9
= 36 + 108
= 144 cm
lp =36 +4.1/2 . 6.9
lp= 36 +108
lp=144