Lp=
=2×(p×l+p×t+l×t)
=2× (35 × 17 +35 ×14 + 17×14)
=2×(595 + 490 +238)
= 2 ×1.323
=2.646 cm2
luas prmkaan balok =(2×p×l)+(2×p×t)+(2×l×t)
=(2×14×17)+(2×14×35)+(2×17 ×35)
=476+980+1190
=2.646
C. 2.646 cm2
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Lp=
=2×(p×l+p×t+l×t)
=2× (35 × 17 +35 ×14 + 17×14)
=2×(595 + 490 +238)
= 2 ×1.323
=2.646 cm2
luas prmkaan balok =(2×p×l)+(2×p×t)+(2×l×t)
=(2×14×17)+(2×14×35)+(2×17 ×35)
=476+980+1190
=2.646
C. 2.646 cm2