tolong dongg.... I pake cara dikumpul besok

LP = 2 ( p × l + p × t + l × t )
LP = 2 ( 5 × 5 + 5 × 9 + 5 × 9 )
LP = 2 ( 25 + 45 + 45 )
LP = 2 ( 115 ) = 230 cm²

Penyelesaian :

Luas permukaan balok = Lb
Lp = 2 × ( p × l ) + ( p × t ) + ( l × t )
Lp = 2 × ( 5 × 5 ) + ( 5 × 9 ) + ( 5 × 9 )
Lp = 2 × ( 25 cm + 45 cm + 45 cm )
Lp = 2 × 115 cm
Lp = 230 cm^2
Opsi => A

- MathLovers♡
Good Luck :)