Luas permukaan balok
[tex]2(p \times l + p \times t+ l \times t) \\ 2(11 \times 7 + 11 \times 3 + 7 \times 3) \\ 2(77 + 33 + 21) \\ 2(131) \\ 262 \: {cm}^{2} [/tex]
LP = 2(11(7) + (11(3) + (7(3)
= 2(77 + 33 + 21)
= 2(77 + 54)
= 2(131)
= 262 CM²
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Verified answer
Luas permukaan balok
[tex]2(p \times l + p \times t+ l \times t) \\ 2(11 \times 7 + 11 \times 3 + 7 \times 3) \\ 2(77 + 33 + 21) \\ 2(131) \\ 262 \: {cm}^{2} [/tex]
LP = 2(11(7) + (11(3) + (7(3)
= 2(77 + 33 + 21)
= 2(77 + 54)
= 2(131)
= 262 CM²