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Verified answer
P:l:t =4:3:2p+t =4+2 =6 --> 18 cm
p=4/6x18 =12 cm
t=2/6 x 18= 6 cm
l=3/6 x 18 = 9 cm
panjnag rusuk balok = 4 (p+l+t)
=4 ( 12+6+9)
= 4 ( 27)
=108 cm