tolong kerjakan yang nomor 2 dan 3 senin dikumpulin

2) l = 30
p = 30 x 3/2 = 90/2 = 45
t= 30 + 4 = 34
v= 45 x 34 x 30 = 45900 cm²

3)p = 10 cm = 1 dm
 l =15 cm = 1,5 dm
t = 1 m = 10 dm
v = 1 x 1,5 x 10 = 15 dm = 15 liter
Rp12000 x 15 = Rp180000