tolong jwab, beserta caranya

1. 12 x 25 x 135.000 = 40.500.000

2. panjang rusuk =∛9.261 cm³ = 21 cm

3. jari-jari = 70cm = 7 dm
   tinggi = 1 m = 10 dm
   volume = πr²t = 22/7 x 7 x 7 x 10 = 1.540 dm³ = 1.540 liter

debit air 20 liter/menit
dalam 1 hari = 20 liter /menit x 10 menit = 200 liter air yg berkurang
dalam 1 minggu = 200 x 7 = 1.400 liter

sisa air = 1.540 - 1.400 = 140 liter