~Jawab~
• Ketahui nilai x.
s + s + s = Keliling
(x + 1) + (x + 4) + (x + 7) = 36
3x + 12 = 36
3x = 24
x = 8
AB = (x + 4) = 8 + 4 = 12 cm
36 = x+1 + x+4 + x+7
= 3x+12
AB = x+4 = 8+4 = 12 cm
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~Jawab~
Segitiga
• Ketahui nilai x.
s + s + s = Keliling
(x + 1) + (x + 4) + (x + 7) = 36
3x + 12 = 36
3x = 24
x = 8
AB = (x + 4) = 8 + 4 = 12 cm
36 = x+1 + x+4 + x+7
= 3x+12
3x = 24
x = 8
AB = x+4 = 8+4 = 12 cm