Jawab:
Lp balok = 2 x ((p x l) + (p x t) + (l x t))
Lp balok = 2 x ((12 x 10) + (12 x 5) + (10 x 5)
Lp balok = 2 x (120 + 60 + 50)
Lp balok = 2 x 230 = 460 cm2
Lp kubus = 6 x s x s
Lp kubus = 6 x 10 cm x 10 cm = 600 cm2
600 cm2 + 460 cm2 = 1.060 cm2
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Jawab:
Lp balok = 2 x ((p x l) + (p x t) + (l x t))
Lp balok = 2 x ((12 x 10) + (12 x 5) + (10 x 5)
Lp balok = 2 x (120 + 60 + 50)
Lp balok = 2 x 230 = 460 cm2
Lp kubus = 6 x s x s
Lp kubus = 6 x 10 cm x 10 cm = 600 cm2
600 cm2 + 460 cm2 = 1.060 cm2