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2(pl+lt+tp)
2(5x(2x) + 2x(x) + x(5x)
= 306
2(10x^2 + 2x^2 + 5x^2)
= 306
2(17x^2) = 306
17x^2 = 306/2
17x^2 = 153
X^2 = 9
X= \/9
X = 3
Vbalok = plt
5x.2x.x
5(3).2(3).(3)
15.6.3
=270cm^3