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L = 2 x La + ( Ka x tinggi )
L = 2 x (3x10) + ( (3 +3 + 10 +10) 4 )
L = 2 x 30 + ( 26 x 4)
L = 60 x 104
L = 6240 cm²
2.
L = 2π(r+t)
L = 2 x 3,14 ( 4 + 30 )
L = 6,28 x 34
L = 213,52 cm²
3.
jika dit volumenya...
V = p x l x t
V = 10 x 5 x 6
V = 300 cm²
jika dit Luasnya...
L = 2 ( pl + pt + lt )
L = 2 ( 10x5 + 10x6 + 5x6 )
L = 2 ( 50 + 60 + 30 )
L = 2 x 140
L = 280 cm²
semoga membantu......