Luas permukaan balok dgn panjang 18 cm, lebar 12 cm, tinggi 10 cm= .... cm² a. 616 cm² b. 1.032 cm² c. 1.080 cm² d. 2.160 cm² +cara

Luas permukaan
= 2 × ( p × l ) + ( p × t ) + ( l × t )
= 2 × ( 18 × 12 ) + ( 18 × 10 ) + ( 12 × 10 )
= 2 × ( 216 + 180 + 120 )
= 2 × 516
= 1.032 cm2

♧♧ B ♧♧

luas=(2×p×l) + (2×p×t) + (2×l×t)= (2×18×12) + (2×18×10) + (2×12×10) =432+360+240=1.032 cm2 jwbn nya yg b
maaf y klo slh