Jawabanmu

2014-05-04T14:10:00+07:00
LP balok= 2(pl+pt+lt) 198 = 2(p.6+p.3+3.6) 198 = 2(6p+3p+18) 198 = 12p+6p+36 198 - 36 = 12p+6p 162 = 18p 162 ÷ 18 = p 9 = p
2014-05-04T14:20:50+07:00
L= 2 ( p x l + p x t + l x t)
L = 198 cm^2
l = 6cm
t = 3cm
p = ??
198 = 2 (p.6 + p.3 + 6.3)
198 = 2 (6p + 3p + 18)
198 = 12p + 6p + 36
198 - 36 = 18p
162 = 18p
p = 9
jadi, p itu adalah 9 cm

note: mudah2n membantu :)