Suatu balok berukurann panjang (3x+2) cm dan lebar ( x + 5 ) cm dan tinggi ( 2x - 4) cm jika jumlah panjang rusuk balok tersebut 156 cm.lebar balok tersebut adalah
maaf bertanya agak banyak makasih jawabanya
dnnyz07
Jumlah rusuk = 4(p+l+t) 156 = 4(3x+2+x+5+2x-4) 156 = 4(6x+3) 156 = 24x + 12 156-12 = 24x x = 144/24 x = 6 lebar x + 5 = 6 + 5 = 11 cm
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Avicennaa
Jumlah panjang rusuk = 4 ( P + L + T) 156 = 4 ( 3x + 2 + x + 5 + 2x -4) 156 = 4 ( 6x + 3) 39 = 6x + 3 39 - 3 = 6x 36 = 6x x = 6
156 = 4(3x+2+x+5+2x-4)
156 = 4(6x+3)
156 = 24x + 12
156-12 = 24x
x = 144/24
x = 6
lebar
x + 5
= 6 + 5
= 11 cm
156 = 4 ( 3x + 2 + x + 5 + 2x -4)
156 = 4 ( 6x + 3)
39 = 6x + 3
39 - 3 = 6x
36 = 6x
x = 6
lebar balok = x + 5
= 6 + 5
= 11