tolong dijawab ya please :)

1. a) panjang rusuk = 12 x 10cm = 120cm

b) L= s x s = 10 x 10 = 100cm2
LP = 6 x 100cm2 = 600cm2

c) s x s x s = 10 x 10 x 10 = 1000cm3

2. a) - 4 x 25cm = 100cm
-  4 x 10cm = 40 cm
- 4 x 15 = 60cm
panjang rusuk= 100 + 40 + 60 = 200 cm

b) - 2(25 x 15) = 750cm2
- 2(25 x 10) = 500 cm2
- 2(15 x 10) = 300 cm2
LP= 750 + 500 + 300 = 1550 cm2

c) p x l x t = 25 x 15 x 10 = 3750cm3