luas permukaan balok=2(PL+PT+LT) P=10 L=2 T=6

Luas = 2 (10x2 + 10x6 + 2x6)
= 2 (10+60+12)
= 2 (82)
= 164

dik:p=10
L=2
T=6
dit:L. pb=.....?
penye:L. pb=2(PL+PT+LT)
=2(10×2+10×6+2×6)
=2(20+60+12)
=2×92=184