tolong dijawab sekarang

Bab Bangun Ruang
Matematika SMP Kelas VII

12] tabung
volume = π x r x r x t
volume = 22/7 x 7 x 7 x 10
volume = 1.540 cm³

13] balok
panjang kerangka balok = 4 x (p + l + t)
panjang kerangka balok = 4 x (7 + 3 + 5)
panjang kerangka balok = 4 x 15
panjang kerangka balok = 60 cm

panjang 2 kerangka balok = 2 x 60
panjang 2 kerangka balok = 120 cm

sisa kawat = 150 cm - 120 cm = 30 cm

14] jumlah solar = 6,74 m³ + 4.250 liter + 6,050 m³
jumlah solar = 6,74 x 1.000 liter + 4.250 liter + 6,050 x 1.000 liter
jumlah solar = 6.740 liter + 4.250 liter + 6.050 liter
jumlah solar = 17.040 liter

15] A : N = 3 : 1
A : S = 3 : 1

A : N : S = 3 : 1 : 1

jawabannya D

16] √4.900 = √(70²) = 70 

17] 12 < n < 18
12 < 13, 14, 15, 16, 17 < 16

HP = {13, 14, 15, 16, 17}