Aplikasi
Balok
p = (5x + 3) cm
l = (4x - 2) cm
t = (x - 2) cm
koreksi soal
196 cm
a.
total kawat yg diperlukan utk membuat 1 kerangka balok = 196 cm
4(p + l + t) = 196
p + l + t = 196/4
p + l + t = 49
5x + 3 + 4x - 2 + x - 2 = 49
10x - 1 = 49
10x = 50
b
x = 50/10
x = 5
balok
p = 5x + 3
p = 5.5 + 3
p = 28 cm
l = 4x - 2
l = 4.5 - 2
l = 18 cm
t = x - 2
t = 5 - 2
t = 3 cm
1).4(p+l+t) = kerangka balok
4(5x+3 + 4x-2 + x-2) = 196
2).4(10x - 1) = 196
40x - 4 = 196
40x = 196 + 4
40x = 200
p = 5x+3 = 5(5)+3 = 25+3 = 28 cm
l = 4x-2 = 4(5)-2 = 20-2 = 18 cm
t = x-2 = 5-2 = 3 cm
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Aplikasi
Balok
p = (5x + 3) cm
l = (4x - 2) cm
t = (x - 2) cm
koreksi soal
196 cm
a.
total kawat yg diperlukan utk membuat 1 kerangka balok = 196 cm
4(p + l + t) = 196
p + l + t = 196/4
p + l + t = 49
5x + 3 + 4x - 2 + x - 2 = 49
10x - 1 = 49
10x = 50
b
10x = 50
x = 50/10
x = 5
balok
p = 5x + 3
p = 5.5 + 3
p = 28 cm
l = 4x - 2
l = 4.5 - 2
l = 18 cm
t = x - 2
t = 5 - 2
t = 3 cm
1).4(p+l+t) = kerangka balok
4(5x+3 + 4x-2 + x-2) = 196
2).4(10x - 1) = 196
40x - 4 = 196
40x = 196 + 4
40x = 200
x = 5
p = 5x+3 = 5(5)+3 = 25+3 = 28 cm
l = 4x-2 = 4(5)-2 = 20-2 = 18 cm
t = x-2 = 5-2 = 3 cm