Question

Tolong yaa.... yg nmr 14 sama 15

Answer 1

Volume 6 kotak = 2.058 cm³
Volume 1 kotak = 2.058/6 = 343 cm³

Volume = s³ (s = rusuk)
343 = s³
s = ∛343 = 7 cm

Putaran 1 = 1 jam 23 menit 18 detik
putaran 2 =  1 jam 36 menit 42 detik
-------------------------------------------------------- +
total        =  2 jam 59 menit 60 detik
               = 2 jam 60 menit
               = 3 jam

Jika latihan selesai 17.30
maka mulai latihan = 17.30 - 3 jam = 14.30