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198=2{(p*3)+(p*6)+(6*3)]
198=2(3p+6p+18)
198=6p+12p+36
198=18p+36
18p=198-36
18p=162
p=162:18
p=9
376=2{(10*6)+(10*t)+(6*t)]
376=2{(60+10t+6t)]
376=120+20t+12t
376=120+32t
32t=376-120
32t=256
t=256:32
t=8
198 = 2.p.6 + 2.p.3 + 2.6.3
198 = 12p + 6p + 36
198 - 36 = 18p
162 = 18p
p = 162/18
p = 9 cm
2) Lp.balok = 2pl + 2pt + 2lt
376 = 2.10.6 + 2.10.t + 2.6.t
376 = 120 + 20t + 12t
376-120 = 32t
256 = 32t
t = 256/32
t = 8 cm