Tolong dijawab semuanya Pake caranya no 66-73

66) L = ½ × d1 × d2
= ½ × 16 × 20
= 160 cm²

67) L = ½ × d1 × d2
= ½ × 28 × 18
= 252 m²

68) V = r³
V = 12³
V = 1.728 cm³

69) V = p × l × t
= 15 × 6 × 4
= 360 cm³

70) V = 250 liter = 250 dm³
V = p × l × t
250 = 10 × 5 × t
250 = 50 t
t = 250 ÷ 50
t = 5 dm

71) 20 = 2² × 5
25 = 5²
a) fpb = 5
jadi byk bungkusan = 5
b) byk telur ayam = 20 ÷ 5 = 4
byk telur bebek = 25 ÷ 5 = 5

72) kec = 70 km/jam
wktu = 3 jam
jarak = kec × wktu
= 70 km/jam × 3 jam
= 210 km

73) 50 L + 200 dal
= 50 L + ( 200 × 10) L
= 50 + 2.000
= 2.050 L