Question

Luas permukaan gabungan bangun ruang berikut

Answer 1

Luas Permukaan Balok
= 4 x (25 x 40) + 2 x (25 x 30)
= 4,000 + 1,500
= 5,500 Cm²

Luas Permukaan Prisma Segitiga
= 2 x (25 x 40) + 2 x (½ x 30 x 20)
= 2,000 + 600
= 2,600 Cm²

Luas Total
= 5,500 + 2,600
= 8,100 Cm²

Maaf kalau benar ya kak...
Let's math every^DAMN^day!
[DAMNATION]™