Tentukan luas bangun ruang di bawah ini. No 1-6

1.luas=luas alas× t
=(1/2×a×t)×t
=(1/2×3cm×4cm)×10cm
=6cm×10cm
=60cm
2.luas=luas alas×t
=(phi×r kuadrat)× t
=(3,14×4 kuadrat)× t
=(3,14×16)×30
=50,24×30=1.507,2
3.luas=p×l×t
=10cm×5cm×6cm
=300cm

2) L = phi × r × r × t
= 3,14 × 4 cm × 4 cm × 30 cm
= 1.507,2 cm(pangkat 2)

3) L = 2 × [(p×l) + (p×t) + (l×t)]
= 2 × [(10 cm × 5 cm) + (10 cm × 6 cm) + (5 cm × 6 cm)]
= 2 × (50 cm + 60 cm + 30 cm)
= 2 × 140 cm
= 280 cm(pangkat 2)
5) L = 6 × s × s
= 6 × 4 cm × 4 cm
= 96 cm(pangkat 2)

maaf cuma bisa jawab 3 nomer
semoga membantu ^^