tolong jawab nomer 1-4

1.
P = 3/2 × 8
= 12 cm
K = 2 × (p + l)
= 2 × (12 + 8)
= 2 × 20
= 40 cm
L = p × l
= 12 × 8
= 96
2.
24 m/8detik = 24.000cm/8detik
3.
V = d × w
= 10 mL × 140
= 1400 mL/detik
4.
W = V : d
= (8 × 5 ×4)m : 2500 dm
= 160000 : 2500
= 64 detik
= 1 menit, 4 detik