tolong jawab y kak pake cara juga pliss buat besok

1. L = (2xluas alas) + luas selimut
L = (2x6)+30
L = 12+30
L = 42 cm²

2. L = 2πrt(r+t)
L = 2.3,14.4.30(4+30)
L = 753,6(34)
L = 25,622 cm²

3. L = 2pl+2pt+2lt
L = (2.10.5)+(2.10.6)+(2.10.6)
L = 100+120+120
L = 340 cm²