Pliss bntui aku kakk kerjain tugas ini, mksihh:)

mapel : matematika
bab : bangun ruang

diketahui :
- luas alas = 40cm²
- lebar = 5cm
- tinggi prisma = 12cm

ditanya = luas permukaan prisma ??

luas alas = P × L
40cm² = P × 5cm
P = 40cm² ÷ 5cm
P = 8cm

L. prisma = ( 2 × L.alas ) + ( kll alas × T.prisma )
= ( 2 × 40cm² ) + ( 2(8cm + 5cm) × 12cm )
= ( 80cm² ) + ( 2( 13cm ) × 12cm )
= ( 80cm² ) + ( 26cm × 12cm )
= ( 80cm² ) + ( 312cm² )
= 392cm²

semoga membantu